This error can also occur if you are invoking a WLM-managed stored
procedure that is not APF authorized, and the DB2 load libraries are not
in the STEPLIB concatenation because they are being loaded from LINKLIST.
In this case, if you want the stored procedure program to run
APF-authorized, link-edit it with AC=1 into an MVS APF authorized library.
If you do not want the stored procedure program to run APF authorized, add
the DB2 load library to the STEPLIB concatenation of the JCL used to start
the WLM-managed address space.
Make sure your WLM JCL concatenated with the right step libs in your shop.