| Enumerator | 
|---|
| GLOBUS_GSI_CALLBACK_ERROR_SUCCESS  | 
 Success - never used  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_VERIFY_CRED  | 
 Error verifying credential  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_CERT_NOT_YET_VALID  | 
 The certificate is not yet valid  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_CANT_GET_LOCAL_CA_CERT  | 
 Unable to discover a local trusted CA for a given certificate  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_CERT_HAS_EXPIRED  | 
 The certificate has expired  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_INVALID_PROXY  | 
 The proxy format is invalid  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_LIMITED_PROXY  | 
 Limited proxies are not accepted  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_INVALID_CRL  | 
 Invalid CRL  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_REVOKED_CERT  | 
 The certificate has been revoked  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_MIXING_DIFFERENT_PROXY_TYPES  | 
 The cert chain contains both legacy on RFC compliant proxies  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_WITH_SIGNING_POLICY  | 
 Could not verify certificate chain against the signing policy for the issuing CA  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_OLD_GAA  | 
 OldGAA error  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_CALLBACK_DATA  | 
 Error with the callback data structure  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_ERRNO  | 
 System error  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_CERT_CHAIN  | 
 Error setting or getting the cert chain from callback data  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_WITH_CALLBACK_DATA_INDEX  | 
 Error getting callback data index  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_PROXY_PATH_LENGTH_EXCEEDED  | 
 Exceeded the path length specified in the proxy cert info extension  
 | 
| GLOBUS_GSI_CALLBACK_ERROR_LAST  | 
 Last marker - never used  
 |