CA EASYTRIEVE REPORT GEN release 11.6
Release 11.6 now has the following valid options for the WARNCC parameter:
F Z S
That is why it didn't like the WARNCC parameter set to N.
Here is the link to the documentation for you:
It is on the first page of the new features after paging just a little and has the following information:
WARNCC specifies which condition code the compiler returns for warning messages. Typically a compilation that reports only warning messages returns with a condition code of 4. You cannot override this value during program compilation.
The WARNCC option has the following format:
F Returns a condition code of 4 for warnings. This is the default.
S Returns a condition code of 16 for warnings.
Z Returns a condition code of 0 for warnings.
This new feature became available under release 11 SP04. But, the functionality could have changed since earlier releases. Please choose one of the valid choices, based on what you would like to do.