CASCF0002F Error Processing Region Configuration, reason = error-type,error-qualifier

An error has occurred during Region configuration file processing.
Note:

Rocket® Enterprise Suite products provide a proprietary run-time engine to enable compatibility for customers’ IBM® CICS® applications. IBM and CICS are registered trademarks of International Business Machines Corp. Rocket Enterprise Suite products do not include an IBM CICS engine and are not affiliated with IBM.

The error-type describes the type of error, and error-qualifier gives further information depending on error-type as follows

 
1 - The region name (error-qualifier) was not valid 
2 - Line number error-qualifier of the configuration file is not valid 
3 - The configuration file did not exist when OPEN was called, 
    error-qualifier contains the COBOL return code from CBL_OPEN_FILE 
4 - Failure when creating configuration save file, error-qualifier contains 
    COBOL return code from CBL_CREATE_FILE 
5 - Failure reading from file, error-qualifier contains the COBOL return 
    code from CBL_READ_FILE 
6 - Failure writing to file, error-qualifier contains the COBOL return 
    code from CBL_WRITE_FILE
System Action:
Terminate the requesting process.
Resolution:
Determine and fix the cause of the problem.
Module:
dfh0cfg
Destination:
Standard error and/or system console