> ## Documentation Index
> Fetch the complete documentation index at: https://lago-ftr-wallet-improvements.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# The subscription object

> This object represents the assignation of plan to one of the customer of your business.

<RequestExample>
  ```json The subscription object
  {
    "subscription": {
      "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
      "external_id": "5eb02857-a71e-4ea2-bcf9-57d3a41bc6ba",
      "lago_customer_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
      "external_customer_id": "5eb02857-a71e-4ea2-bcf9-57d3a41bc6ba",
      "billing_time": "anniversary",
      "name": "Repository A",
      "plan_code": "premium",
      "status": "active",
      "created_at": "2022-08-08T00:00:00Z",
      "canceled_at": "2022-09-14T16:35:31Z",
      "started_at": "2022-08-08T00:00:00Z",
      "ending_at": "2022-10-08T00:00:00Z",
      "subscription_at": "2022-08-08T00:00:00Z",
      "terminated_at": "2022-09-14T16:35:31Z",
      "previous_plan_code": null,
      "next_plan_code": null,
      "downgrade_plan_date": "2022-04-30",
      "trial_ended_at": "2022-08-08T00:00:00Z",
      "plan": {
        "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
        "name": "Startup",
        "invoice_display_name": "Startup plan",
        "created_at": "2023-06-27T19:43:42Z",
        "code": "startup",
        "interval": "monthly",
        "description": "",
        "amount_cents": 10000,
        "amount_currency": "USD",
        "trial_period": 5,
        "pay_in_advance": true,
        "bill_charges_monthly": null,
        "active_subscriptions_count": 0,
        "draft_invoices_count": 0,
        "minimum_commitment": {
          "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
          "plan_code": "premium",
          "amount_cents": 100000,
          "invoice_display_name": "Minimum Commitment (C1)",
          "interval": "monthly",
          "created_at": "2022-04-29T08:59:51Z",
          "updated_at": "2022-04-29T08:59:51Z",
          "taxes": [
            {
              "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
              "name": "TVA",
              "code": "french_standard_vat",
              "description": "French standard VAT",
              "rate": 20,
              "applied_to_organization": true,
              "add_ons_count": 0,
              "charges_count": 0,
              "customers_count": 0,
              "plans_count": 0,
              "created_at": "2023-07-06T14:35:58Z"
            }
          ]
        },
        "charges": [
          {
            "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a91",
            "lago_billable_metric_id": "1a901a90-1a90-1a90-1a90-1a901a901a91",
            "billable_metric_code": "requests",
            "created_at": "2023-06-27T19:43:42Z",
            "charge_model": "package",
            "invoiceable": true,
            "invoice_display_name": "Setup",
            "pay_in_advance": false,
            "prorated": false,
            "min_amount_cents": 3000,
            "properties": {
              "amount": "30",
              "free_units": 100,
              "package_size": 1000
            },
            "filters": []
          },
          {
            "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a92",
            "lago_billable_metric_id": "1a901a90-1a90-1a90-1a90-1a901a901a92",
            "billable_metric_code": "cpu",
            "created_at": "2023-06-27T19:43:42Z",
            "charge_model": "graduated",
            "invoiceable": true,
            "invoice_display_name": "Setup",
            "pay_in_advance": false,
            "prorated": false,
            "min_amount_cents": 0,
            "properties": {
              "graduated_ranges": [
                {
                  "from_value": 0,
                  "to_value": 10,
                  "flat_amount": "10",
                  "per_unit_amount": "0.5"
                },
                {
                  "from_value": 11,
                  "to_value": null,
                  "flat_amount": "0",
                  "per_unit_amount": "0.4"
                }
              ]
            },
            "filters": []
          },
          {
            "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a93",
            "lago_billable_metric_id": "1a901a90-1a90-1a90-1a90-1a901a901a93",
            "billable_metric_code": "seats",
            "created_at": "2023-06-27T19:43:42Z",
            "charge_model": "standard",
            "invoiceable": true,
            "invoice_display_name": "Setup",
            "pay_in_advance": true,
            "prorated": false,
            "min_amount_cents": 0,
            "properties": {},
            "filters": [
              {
                "invoice_display_name": "Europe",
                "properties": {
                  "amount": "10"
                },
                "values": {
                  "region": [
                    "Europe"
                  ]
                }
              },
              {
                "invoice_display_name": "USA",
                "properties": {
                  "amount": "5"
                },
                "values": {
                  "region": [
                    "USA"
                  ]
                }
              },
              {
                "invoice_display_name": "Africa",
                "properties": {
                  "amount": "8"
                },
                "values": {
                  "region": [
                    "Africa"
                  ]
                }
              }
            ]
          },
          {
            "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a94",
            "lago_billable_metric_id": "1a901a90-1a90-1a90-1a90-1a901a901a94",
            "billable_metric_code": "storage",
            "created_at": "2023-06-27T19:43:42Z",
            "charge_model": "volume",
            "invoiceable": true,
            "invoice_display_name": "Setup",
            "pay_in_advance": false,
            "prorated": false,
            "min_amount_cents": 0,
            "properties": {
              "volume_ranges": [
                {
                  "from_value": 0,
                  "to_value": 100,
                  "flat_amount": "0",
                  "per_unit_amount": "0"
                },
                {
                  "from_value": 101,
                  "to_value": null,
                  "flat_amount": "0",
                  "per_unit_amount": "0.5"
                }
              ]
            },
            "filters": []
          },
          {
            "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a95",
            "lago_billable_metric_id": "1a901a90-1a90-1a90-1a90-1a901a901a95",
            "billable_metric_code": "payments",
            "created_at": "2023-06-27T19:43:42Z",
            "charge_model": "percentage",
            "invoiceable": false,
            "invoice_display_name": "Setup",
            "pay_in_advance": true,
            "prorated": false,
            "min_amount_cents": 0,
            "properties": {
              "rate": "1",
              "fixed_amount": "0.5",
              "free_units_per_events": 5,
              "free_units_per_total_aggregation": "500"
            },
            "filters": []
          }
        ],
        "taxes": [
          {
            "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
            "name": "TVA",
            "code": "french_standard_vat",
            "description": "French standard VAT",
            "rate": 20,
            "applied_to_organization": true,
            "add_ons_count": 0,
            "charges_count": 0,
            "customers_count": 0,
            "plans_count": 0,
            "created_at": "2023-07-06T14:35:58Z"
          }
        ]
      }
    }
  }
  ```
</RequestExample>

## Attributes

<ResponseField name="subscription" type="object">
  <Expandable title="object" defaultOpen="true">
    <ResponseField name="lago_id" type="string" required>
      Unique identifier assigned to the subscription within the Lago
      application. This ID is exclusively created by Lago and serves as a unique
      identifier for the subscription’s record within the Lago system.
    </ResponseField>

    <ResponseField name="lago_customer_id" type="string" required>
      Unique identifier assigned to the customer within the Lago application.
      This ID is exclusively created by Lago and serves as a unique identifier
      for the customer's record within the Lago system.
    </ResponseField>

    <ResponseField name="billing_time" type="string" required>
      The billing time for the subscription, which can be set as either
      `anniversary` or `calendar`. If not explicitly provided, it will default
      to `calendar`. The billing time determines the timing of recurring billing
      cycles for the subscription. By specifying `anniversary`, the billing
      cycle will be based on the specific date the subscription started (billed
      fully), while `calendar` sets the billing cycle at the first day of the
      week/month/year (billed with proration).
    </ResponseField>

    <ResponseField name="external_customer_id" type="string" required>
      The customer external unique identifier (provided by your own
      application).
    </ResponseField>

    <ResponseField name="external_id" type="string" required>
      The subscription external unique identifier (provided by your own
      application).
    </ResponseField>

    <ResponseField name="subscription_at" type="string" required>
      The anniversary date and time of the initial subscription. This date
      serves as the basis for billing subscriptions with `anniversary` billing
      time. The `anniversary_date` should be provided in ISO 8601 datetime
      format in seconds and expressed in Coordinated Universal Time (UTC).
    </ResponseField>

    <ResponseField name="canceled_at" type="string">
      The cancellation date of the subscription. This field is not null when the
      subscription is `canceled`. This date should be provided in ISO 8601
      datetime format in seconds and expressed in Coordinated Universal Time
      (UTC).
    </ResponseField>

    <ResponseField name="created_at" type="string" required>
      The creation date of the subscription, represented in ISO 8601 datetime
      format in seconds and expressed in Coordinated Universal Time (UTC). This
      date provides a timestamp indicating when the subscription was initially
      created.
    </ResponseField>

    <ResponseField name="plan_code" type="string" required>
      The unique code representing the plan to be attached to the customer. This
      code must correspond to the `code` property of one of the active plans.
    </ResponseField>

    <ResponseField name="started_at" type="string" required>
      The effective start date of the subscription. This field can be null if
      the subscription is `pending` or `canceled`. This date should be provided
      in ISO 8601 datetime format in seconds and expressed in Coordinated
      Universal Time (UTC).
    </ResponseField>

    <ResponseField name="ending_at" type="string">
      The effective end date of the subscription. If this field is set to null,
      the subscription will automatically renew. This date should be provided in
      ISO 8601 datetime format in seconds and expressed in Coordinated Universal
      Time (UTC).
    </ResponseField>

    <ResponseField name="name" type="string" required>
      The display name of the subscription on an invoice. This field allows for
      customization of the subscription's name for billing purposes, especially
      useful when a single customer has multiple subscriptions using the same
      plan.
    </ResponseField>

    <ResponseField name="status" type="string" required>
      The status of the subscription, which can have the following values: -
      `pending`: a previous subscription has been downgraded, and the current
      one is awaiting automatic activation at the end of the billing period. -
      `active`: the subscription is currently active and applied to the
      customer. - `terminated`: the subscription is no longer active. -
      `canceled`: the subscription has been stopped before its activation. This
      can occur when two consecutive downgrades have been applied to a customer
      or when a subscription with a pending status is terminated.
    </ResponseField>

    <ResponseField name="terminated_at" type="string">
      The termination date of the subscription. This field is not null when the
      subscription is `terminated`. This date should be provided in ISO 8601
      datetime format in seconds and expressed in Coordinated Universal Time
      (UTC)
    </ResponseField>

    <ResponseField name="previous_plan_code" type="string">
      The code identifying the previous plan associated with this subscription.
    </ResponseField>

    <ResponseField name="next_plan_code" type="string">
      The code identifying the next plan in the case of a downgrade.
    </ResponseField>

    <ResponseField name="downgrade_plan_date" type="string">
      The date when the plan will be downgraded, represented in ISO 8601 date
      format.
    </ResponseField>

    <ResponseField name="trial_ended_at" type="string">
      The expiration date of the free trial, formatted in ISO 8601 standard.
    </ResponseField>

    <ResponseField name="plan" type="object">
      <Expandable title="object">
        <ResponseField name="lago_id" type="string" required>
          Unique identifier of the plan created by Lago.
        </ResponseField>

        <ResponseField name="created_at" type="string" required>
          The date and time when the plan was created. It is expressed in UTC
          format according to the ISO 8601 datetime standard. This field
          provides the timestamp for the exact moment when the plan was
          initially created.
        </ResponseField>

        <ResponseField name="name" type="string" required>
          The name of the plan.
        </ResponseField>

        <ResponseField name="code" type="string" required>
          The code of the plan. It serves as a unique identifier associated with
          a particular plan. The code is typically used for internal or
          system-level identification purposes, like assigning a subscription,
          for instance.
        </ResponseField>

        <ResponseField name="interval" type="string" required>
          The interval used for recurring billing. It represents the frequency
          at which subscription billing occurs. The interval can be one of the
          following values: `weekly`, `monthly`, `quarterly` or `yearly`.
        </ResponseField>

        <ResponseField name="description" type="string">
          The description on the plan.
        </ResponseField>

        <ResponseField name="amount_cents" type="integer" required>
          The base cost of the plan, excluding any applicable taxes, that is
          billed on a recurring basis. This value is defined at 0 if your plan
          is a pay-as-you-go plan.
        </ResponseField>

        <ResponseField name="amount_currency" type="string" required>
          The currency of the plan. It indicates the monetary unit in which the
          plan's cost, including taxes and usage-based charges, is expressed.
        </ResponseField>

        <ResponseField name="trial_period" type="float">
          The duration in days during which the base cost of the plan is offered
          for free.
        </ResponseField>

        <ResponseField name="pay_in_advance" type="boolean" required>
          This field determines the billing timing for the plan. When set to
          `true`, the base cost of the plan is due at the beginning of each
          billing period. Conversely, when set to `false`, the base cost of the
          plan is due at the end of each billing period.
        </ResponseField>

        <ResponseField name="bill_charges_monthly" type="boolean">
          This field, when set to `true`, enables to invoice usage-based charges
          on monthly basis, even if the cadence of the plan is `yearly`. This
          allows customers to pay charges overage on a monthly basis. This can
          be set to true only if the plan’s interval is `yearly`.
        </ResponseField>

        <ResponseField name="tax_code" type="string">
          List of unique code used to identify the taxes.
        </ResponseField>

        <ResponseField name="invoice_display_name" type="string">
          Specifies the name that will be displayed on an invoice. If no value
          is set for this field, the name of the actual charge will be used as
          the default display name.
        </ResponseField>

        <ResponseField name="active_subscriptions_count" type="integer" required>
          The count of active subscriptions that are currently associated with
          the plan. This field provides valuable information regarding the
          impact of deleting the plan. By checking the value of this field, you
          can determine the number of subscriptions that will be affected if the
          plan is deleted.
        </ResponseField>

        <ResponseField name="draft_invoices_count" type="integer" required>
          The number of draft invoices that include a subscription attached to
          the plan. This field provides valuable information about the impact of
          deleting the plan. By checking the value of this field, you can
          determine the number of draft invoices that will be affected if the
          plan is deleted.
        </ResponseField>

        <ResponseField name="draft_invoices_count" type="integer" required>
          The number of draft invoices that include a subscription attached to
          the plan. This field provides valuable information about the impact of
          deleting the plan. By checking the value of this field, you can
          determine the number of draft invoices that will be affected if the
          plan is deleted.
        </ResponseField>

        <ResponseField name="minimum_commitment" type="object">
          <Expandable title="minimum_commitment">
            <ResponseField name="lago_id" type="string" required>
              Unique identifier of charge, created by Lago.
            </ResponseField>

            <ResponseField name="plan_code" type="string">
              The unique code representing the plan to be attached to the
              customer.
            </ResponseField>

            <ResponseField name="amount_cents" type="integer" required>
              The amount of the minimum commitment in cents.
            </ResponseField>

            <ResponseField name="invoice_display_name" type="string">
              Specifies the name that will be displayed on an invoice. If no
              value is set for this field, the default name will be used as the
              display name.
            </ResponseField>

            <ResponseField name="interval" type="string">
              The interval used for recurring billing. It represents the
              frequency at which minimum commitment billing occurs. Available
              options: `weekly`, `monthly`, `quarterly`, `yearly`.
            </ResponseField>

            <ResponseField name="created_at" type="string" required>
              The date and time when the minimum commitment was created. It is
              expressed in UTC format according to the ISO 8601 datetime
              standard. This field provides the timestamp for the exact moment
              when the minimum commitment was initially created..
            </ResponseField>

            <ResponseField name="updated_at" type="string">
              The date and time when the minimum commitment was updated. It is
              expressed in UTC format according to the ISO 8601 datetime
              standard. This field provides the timestamp for the exact moment
              when the minimum commitment was initially created.
            </ResponseField>

            <ResponseField name="taxes" type="object[]">
              All taxes applied to the minimum commitment.
            </ResponseField>
          </Expandable>
        </ResponseField>

        <ResponseField name="charges" type="array">
          <Expandable title="charges">
            <ResponseField name="lago_id" type="string" required>
              Unique identifier of the minimum commitment, created by Lago.
            </ResponseField>

            <ResponseField name="lago_billable_metric_id" type="string" required>
              Unique identifier of the billable metric created by Lago.
            </ResponseField>

            <ResponseField name="billable_metric_code" type="string" required>
              Unique code identifying a billable metric.
            </ResponseField>

            <ResponseField name="created_at" type="string" required>
              The date and time when the charge was created. It is expressed in
              UTC format according to the ISO 8601 datetime standard.
            </ResponseField>

            <ResponseField name="charge_model" type="string" required>
              Specifies the pricing model used for the calculation of the final
              fee. It can be `standard`, `graduated`, `package`, `percentage`,
              or `volume`.
            </ResponseField>

            <ResponseField name="pay_in_advance" type="boolean">
              This field determines the billing timing for this specific
              usage-based charge. When set to `true`, the charge is due and
              invoiced immediately. Conversely, when set to `false`, the charge
              is due and invoiced at the end of each billing period.
            </ResponseField>

            <ResponseField name="invoiceable" type="boolean">
              This field specifies whether the charge should be included in a
              proper invoice. If set to `false`, no invoice will be issued for
              this charge. You can only set it to `false` when `pay_in_advance`
              is `true`.
            </ResponseField>

            <ResponseField name="min_amount_cents" type="integer">
              The minimum spending amount required for the charge, measured in
              cents and excluding any applicable taxes. It indicates the minimum
              amount that needs to be charged for each billing period.
            </ResponseField>

            <ResponseField name="invoice_display_name" type="string">
              Specifies the name that will be displayed on an invoice. If no
              value is set for this field, the name of the actual charge will be
              used as the default display name.
            </ResponseField>

            <ResponseField name="prorated" type="boolean" required>
              Specifies whether a charge is prorated based on the remaining
              number of days in the billing period or billed fully. If not
              defined, this argument is set to `false` by default. - If set to
              `true`, the charge is prorated based on the remaining days in the
              current billing period. - If set to `false`, the charge is billed
              in full. Note that only a `charge_model` sets to `standard`,
              `graduated` and `volume` can be prorated.
            </ResponseField>

            <ResponseField name="tax_code" type="string">
              List of unique code used to identify the taxes.
            </ResponseField>

            <ResponseField name="properties" type="JSON">
              <Expandable>
                ### Case of groups and dimensions

                <ResponseField name="group_properties" type="array">
                  <Expandable>
                    <ResponseField name="invoice_display_name" type="string">
                      Specifies the name that will be displayed on an invoice.
                      If no value is set for this field, the values of the
                      filter will be used as the default display name.
                    </ResponseField>

                    <ResponseField name="values" type="string">
                      List of possible filter values. The key and values must
                      match one of the billable metric filters.
                    </ResponseField>
                  </Expandable>
                </ResponseField>

                ### Case of graduated pricing model

                <ResponseField name="graduated_ranges" type="array" required>
                  <Expandable>
                    <ResponseField name="from_value" type="integer" required>
                      Specifies the lower value of a tier for a `graduated`
                      charge model. It must be either 0 or the previous range's
                      `to_value + 1` to maintain the proper sequence of values.
                    </ResponseField>

                    <ResponseField name="to_value" type="integer" required>
                      Specifies the highest value of a tier for a `graduated`
                      charge model. - This value must be higher than the
                      `from_value` of the same tier. - This value must be `null`
                      for the last tier.
                    </ResponseField>

                    <ResponseField name="per_unit_amount" type="string" required>
                      The unit price, excluding tax, for a specific tier of a
                      `graduated` charge model. It is expressed as a decimal
                      value.
                    </ResponseField>

                    <ResponseField name="flat_amount" type="string" required>
                      The flat amount for a whole tier, excluding tax, for a
                      `graduated` charge model. It is expressed as a decimal
                      value.
                    </ResponseField>
                  </Expandable>
                </ResponseField>

                ### Case of package pricing model

                <ResponseField name="amount" type="string" required>
                  The amount, excluding tax, for a complete set of units in a
                  `package` charge model. It is expressed as a decimal value.
                </ResponseField>

                <ResponseField name="package_size" type="integer" required>
                  The quantity of units included in each pack or set for a
                  `package` charge model. It indicates the number of units that
                  are bundled together as a single package or set within the
                  pricing structure.
                </ResponseField>

                <ResponseField name="free_units" type="integer" required>
                  The quantity of units that are provided free of charge for
                  each billing period in a `package` charge model. This field
                  specifies the number of units that customers can use without
                  incurring any additional cost during each billing cycle.
                </ResponseField>

                ### Case of percentage pricing model

                <ResponseField name="rate" type="string" required>
                  The percentage rate that is applied to the amount of each
                  transaction for a `percentage` charge model. It is expressed
                  as a decimal value.
                </ResponseField>

                <ResponseField name="fixed_amount" type="string">
                  The fixed fee that is applied to each transaction for a
                  `percentage` charge model. It is expressed as a decimal value.
                </ResponseField>

                <ResponseField name="free_units_per_events" type="integer">
                  The count of transactions that are not impacted by the
                  `percentage` rate and fixed fee in a percentage charge model.
                  This field indicates the number of transactions that are
                  exempt from the calculation of charges based on the specified
                  percentage rate and fixed fee.
                </ResponseField>

                <ResponseField name="free_units_per_total_aggregation" type="integer">
                  The transaction amount that is not impacted by the
                  `percentage` rate and fixed fee in a percentage charge model.
                  This field indicates the portion of the transaction amount
                  that is exempt from the calculation of charges based on the
                  specified percentage rate and fixed fee.
                </ResponseField>

                <ResponseField name="per_transaction_min_amount" type="string">
                  Specifies the minimum allowable spending for a single
                  transaction. Working as a transaction floor. Cannot be greater
                  than the `per_transaction_max_amount` value.
                </ResponseField>

                <ResponseField name="per_transaction_max_amount" type="string">
                  Specifies the maximum allowable spending for a single
                  transaction. Working as a transaction cap. Cannot be lower
                  than the `per_transaction_min_amount` value.
                </ResponseField>

                ### Case of volume pricing model

                <ResponseField name="volume_ranges" type="array" required>
                  <Expandable>
                    <ResponseField name="from_value" type="integer" required>
                      Specifies the lower value of a tier for a `volume` charge
                      model. It must be either 0 or the previous range's
                      to\_value + 1 to maintain the proper sequence of values.
                    </ResponseField>

                    <ResponseField name="to_value" type="integer" required>
                      Specifies the highest value of a tier for a `volume`
                      charge model. - This value must be higher than the
                      `from_value` of the same tier. - This value must be `null`
                      for the last tier.
                    </ResponseField>

                    <ResponseField name="per_unit_amount" type="string" required>
                      The unit price, excluding tax, for a specific tier of a
                      `volume` charge model. It is expressed as a decimal value.
                    </ResponseField>

                    <ResponseField name="flat_amount" type="string" required>
                      The flat amount for a whole tier, excluding tax, for a
                      `volume` charge model. It is expressed as a decimal value.
                    </ResponseField>
                  </Expandable>
                </ResponseField>

                ### Case of graduated percentage pricing model

                <ResponseField name="graduated_percentage_ranges" type="array" required>
                  <Expandable>
                    <ResponseField name="from_value" type="integer" required>
                      Specifies the lower value of a tier for a `graduated
                                                                  percentage` charge model. It must be either 0 or the
                      previous range's to\_value + 1 to maintain the proper
                      sequence of values.
                    </ResponseField>

                    <ResponseField name="to_value" type="integer" required>
                      Specifies the highest value of a tier for a `graduated
                                                                  percentage` charge model. - This value must be higher than
                      the `from_value` of the same tier. - This value must be
                      `null` for the last tier.
                    </ResponseField>

                    <ResponseField name="rate" type="string" required>
                      The percentage rate that is applied to the amount of each
                      transaction for a `graduated percentage` charge model. It
                      is expressed as a decimal value, and only set for a
                      specific tier.
                    </ResponseField>

                    <ResponseField name="flat_amount" type="string" required>
                      The flat amount for a whole tier, excluding tax, for a
                      `graduated percentage` charge model. It is expressed as a
                      decimal value.
                    </ResponseField>
                  </Expandable>
                </ResponseField>

                ### Case of standard pricing model

                <ResponseField name="amount" type="string" required>
                  The unit price, excluding tax, for a `standard` charge model.
                  It is expressed as a decimal value.
                </ResponseField>

                <ResponseField name="grouped_by" type="array">
                  The list of event properties that are used to group the events
                  on the invoice for a `standard` charge model.
                </ResponseField>
              </Expandable>
            </ResponseField>
          </Expandable>
        </ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>