| Name | Description | Type | Additional information | 
|---|---|---|---|
| CustomerToken | 
                         Optionally contains the unique customer token used to identify the customer the payment account is being added/edited for.  | 
                    string | 
                             None.  | 
                
| ExternalUserID | 
                         Contains the unique user ID for the customer that the payment account is being created for.  | 
                    string | 
                                 String length: inclusive between 0 and 256  | 
                
| PostbackAuthorization | 
                         Optionally provide authorization information to send back to the postback endpoint in the HTTP Authorization header.  | 
                    string | 
                                 String length: inclusive between 0 and 1024  | 
                
| PostbackURL | 
                         Optionally provide a HTTP endpoint to post the new payment account information including token and description to.  | 
                    string | 
                                 String length: inclusive between 0 and 1024  | 
                
| SingleUse | 
                         Optionally specifies whether this payment account can only be used for a single payment. Defaults to false.  | 
                    boolean? | 
                             None.  |