# operation

###### Name of the Ratepay gateway operation

↔ Request/Response parameter

## `<operation>`

| Type | Condition | Enumeration |
|  --- | --- | --- |
| xs:string | Mandatory | - [PAYMENT_INIT](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/place_order/payment_initialization)- [PAYMENT_QUERY](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/place_order/payment_query)- [PAYMENT_REQUEST](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/place_order/payment_request)- [PAYMENT_CHANGE](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/follow_up_operations/payment_change)- [PAYMENT_CONFIRM](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/place_order/payment_confirmation)- [CONFIRMATION_DELIVER](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/follow_up_operations/confirmation_deliver)- [CALCULATION_REQUEST](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/instalment_calculator/calculation_request)- [CONFIGURATION_REQUEST](/docs/developer/api_integration/payment_1.8/payment_api_documentation/the_ratepay_gateway_operations/instalment_calculator/configuration_request) |


## `<operation@subtype>`

Subtype of the operation

| Type | Condition | Enumeration |
|  --- | --- | --- |
| xs:string | Mandatory:- PAYMENT_QUERY | - `full` |
| xs:string | Mandatory:- PAYMENT_CHANGE | - `cancellation`- `return` |
| xs:string | Mandatory:- CALCULATION_REQUEST | - `calculation-by-rate`- `calculation-by-time` |
| xs:string | N/A:- all other cases |  |