What are the common values passed by a procedure in variables ERRBUF, RETCODE?

ERRBUFF It is used to returns the error messages and sent it to the log file.

RETCODE It is used to show the status of the Procedure with 0,1,2.

There are 3 types of RETCODE they are:-

# 0 : Success

# 1 : Warning

# 2 : Error