KDFAP1230E NULL RESULT FROM REXX EXEC [exec_name]
Explanation
A null result was returned by the specified REXX exec. The exec should provide a numeric result.
User response
This error could have been caused by an error in the stated REXX exec. Unless you have changed the exec, contact IBM® Software Support providing this message with the REXX exec name. If this problem has not been reported previously, you must determine why the REXX exec did not return a result. You might have to place additional problem determination aids in the REXX exec.