OperationServiceExtensionsAddExternalPaymentItem Method | 
| Name | Description | |
|---|---|---|
| AddExternalPaymentItem(IOperationService, Decimal, Boolean, IPaymentItemAdditionalData, OrganizationDetailsInfo, IPaymentType, IOrder, ICredentials) | Add new external payment item to order.  | |
| AddExternalPaymentItem(IOperationService, Guid, Decimal, Boolean, IPaymentItemAdditionalData, OrganizationDetailsInfo, IPaymentType, IOrder, ICredentials) | Add new external payment item to order.  |