Changes to List custom plan billings

added the optional property data/items/end_date to the response with the 200 status

added the new end_date_must_be_future enum value to the data/items/problems/items/code response property for the response status 200

added the new end_date_needs_new_subscription enum value to the data/items/problems/items/code response property for the response status 200

added the new end_date_not_after_renewal_date enum value to the data/items/problems/items/code response property for the response status 200

added the new checkout_superseded enum value to the data/items/problems/items/code response property for the response status 200

added the new optional query request parameter plan_billing_sources

added the new optional query request parameter plan_version_id

added the optional property params/plan_billing_sources to the response with the 200 status

added the optional property params/plan_version_id to the response with the 200 status

added the optional property data/items/checkout_id to the response with the 200 status

added the required property data/items/problems to the response with the 200 status

added the new amendment enum value to the data/items/plan_billing_source/allOf[#/components/schemas/PlanBillingSource] response property for the response status 200

added the new amendment enum value to the params/plan_billing_source/allOf[#/components/schemas/PlanBillingSource] response property for the response status 200

added the enum value amendment to the property allOf[PlanBillingSource]/ of the query request parameter plan_billing_source

added the optional property data/items/migration_id to the response with the 200 status

added the optional property data/items/billing_start_date to the response with the 200 status

added the optional property data/items/prorate_first_period to the response with the 200 status

added the optional property data/items/billing_cycle_anchor to the response with the 200 status

added the new optional query request parameter plan_billing_source

added the optional property params/plan_billing_source to the response with the 200 status

added the required property data/items/plan_billing_source to the response with the 200 status

added the required property data/items/send_invoice to the response with the 200 status

for the query request parameter limit, the max was set to 250.00

for the query request parameter limit, the min was set to 0.00

added the optional property data/items/external_invoice_id to the response with the 200 status