DSNAET03
DSNAET03 will translate the error code from the execution of the SQL into a readable message. This module is loaded as part of the Early Code.
Hints
SQL errors should not be occurring. Fix the error and re-execute.
Reference Sources
IBM Db2 for OS/390, Messages and Codes, GC26-8979
IBM Db2 for OS/390, Application Programming and SQL Guide, SC26-8958