Possible enumeration values:
| Name | Value | Description | 
|---|---|---|
| None | 
                     0  | 
                |
| SystemError | 
                     1  | 
                
                     General system error.  | 
            
| Validation | 
                     2  | 
                
                     Validation error. Some provided data is incorrect.  | 
            
| DataNotFound | 
                     3  | 
                
                     Data could not be found using the provided identifier.  | 
            
| DuplicatePayment | 
                     4  | 
                
                     The submitted payment is a duplicate for this account.  | 
            
| PreAuthError | 
                     5  | 
                
                     A pre-authorization on a payment account was declined or failed.  | 
            
| Declined | 
                     6  | 
                
                     The payment request was declined.  | 
            
| ServiceUnavailable | 
                     7  | 
                
                     An External Invoice Service was not available.  | 
            
| UserLocked | 
                     8  |