# transaction-id

###### Ratepay transaction ID.

↔ Request/Response parameter

## `<transaction-id>`

The transaction ID is generated by the PAYMENT_INIT operation. It must be passed with all subsequent messages that are part of the same Ratepay transaction.

The structure of **the transaction-id must not be validated**. It may receive any value.

### Request

| Type | Condition | Restriction |
|  --- | --- | --- |
| xs:string | Mandatory for:- PAYMENT_QUERY- PAYMENT_REQUEST- PAYMENT_CONFIRM- CONFIRMATION_DELIVER- PAYMENT_CHANGEN/A for:- all other cases | Length <=255 |


### Response

| Type | Condition | Restriction |
|  --- | --- | --- |
| xs:string | N/A for:- CONFIGURATION_REQUEST- CALCULATION_REQUESTMandatory for:- all other cases | Length <=50 |