COBOL error report messages are written in the format:
message-number message-text
Message number
A message number is displayed as:
JMWnnnnI-W
JMW : Identifies a message displayed by the COBOL Error Report.
nnnn : Message sequence number
I : Operator intervention not required
W : Severity code
The meanings of severity codes are given in the table below.
Severity code  | Level  | Meaning  | 
|---|---|---|
I (INFORMATION)  | Informational message  | This information is generated when a report file or a dump file has been created.  | 
W (WARNING)  | Minor error  | A report file or a dump file is created, but it is necessary to verify whether the execution result is as intended by the user.  | 
E (ERROR)  | Medium error  | No report file and no dump file are created.  | 
U (UNRECOVERABLE)  | Fatal error  | The execution is canceled and the program terminated abnormally.  | 
Message text
Explains the content of the error.