Some values for RC are:
 
     01  - No region name specified 
     02  - Bad line in file 
     03  - File not found 
     04  - Error creating file 
     05  - Error opening file 
     06  - Error reading file 
     07  - Error writing to file 
     08  - TXLOCAL invalid 
     09  - TXDIR invalid 
     10  - Region files directory invalid 
     11  - Messaging support module not found 
     12  - Utilities module not found 
     13  - File handling module not found 
     14  - System files directory invalid 
     15  - Resource definition file directory invalid 
     16  - Region directory invalid