Changes to Create subscription

added TaxCodeConfig to the custom_plan/allOf[#/components/schemas/BillingSubscriptionCustomPlan]/phases/items/rate_cards/items/tax_config request property allOf list

removed BillingRateCardTaxConfig from the custom_plan/allOf[#/components/schemas/BillingSubscriptionCustomPlan]/phases/items/rate_cards/items/tax_config request property allOf list

added TaxCodeConfig to the phases/items/items/items/rate_card/allOf[#/components/schemas/BillingRateCard]/tax_config response property allOf list for the response status 201

removed BillingRateCardTaxConfig from the phases/items/items/items/rate_card/allOf[#/components/schemas/BillingRateCard]/tax_config response property allOf list for the response status 201

added the new optional request property timing

added the new optional request property starting_phase

added the new optional request property custom_plan

the request property plan became optional

added CurrencyCode BillingCurrencyCodeCustom to the phases/items/items/items/rate_card/allOf[#/components/schemas/BillingRateCard]/currency/allOf[#/components/schemas/BillingCurrencyCode] response property oneOf list for the response status 201

removed CurrencyCode BillingCurrencyCodeCustom from the phases/items/items/items/rate_card/allOf[#/components/schemas/BillingRateCard]/currency/allOf[#/components/schemas/BillingCurrencyCode] response property anyOf list for the response status 201

added the optional property active_to to the response with the 201 status

added the optional property current_period to the response with the 201 status

added the optional property description to the response with the 201 status

added the optional property plan to the response with the 201 status

added the optional property pro_rating_config to the response with the 201 status

response property plan_id deprecated

added the required property active_from to the response with the 201 status

added the required property billing_cadence to the response with the 201 status

added the required property name to the response with the 201 status

added the required property phases to the response with the 201 status

added the new optional request property cost_basis_mode

added the required property cost_basis_mode to the response with the 201 status

added the required property cost_basis_pins to the response with the 201 status

added the required property invoice_currency to the response with the 201 status

the settlement_mode request property default value credit_then_invoice was removed

the settlement_mode response's property default value credit_then_invoice was removed for the status 201

added the new optional request property settlement_mode

added the optional property settlement_mode to the response with the 201 status

removed the request property settlement_mode

removed the optional property settlement_mode from the response with the 201 status