Issued when a fault occurs when opening the catalog at system startup. Return code 21 indicates a problem with the Default Allocation Location setting. Reason codes are as follows:
| Reason code | Description | 
|---|---|
| 11 | Invalid value. The value of the location is invalid. | 
| 12 | Multiple directories have been specified. | 
| 13 | The name has not been set. | 
| 14 | The value is too long (limit is 260). | 
| 15 | No value has been given. | 
| 16 | Memory constrained - unable to store the value. |