Creates a payment item in a file.
The request body is of type CreatePayment.
Request Body Parameters
| Name | Description | Data Type |
| p_APICode | The API code of the site. This can be found through your Sertifi web interface under Administration -> Account Settings. | xml:string |
| p_FileID | The id of the relevant file. | xml:string |
| amount | The amount for the payment (1 period/decimal point and no commas allowed.) | xml:decimal |
| description | The name of the payment that signers see. | xml:string |
| recurrence | The interval at which the payment gets charged. | PaymentReccurence |
| datePaymentDue | Must be in the format dd/MM/yyyy (Day/month/4-digit year) | xml:string |
| operation | "Pay" (charge card automatically) or "Authorize" (charge card later) | PaymentOperationType |

The response body is of type CreatePaymentResponse.
Response Body Parameters
| Name | Description | Data Type |
| CreatePaymentResult | payment id or error message. | xml:string |
