IDC3310I ** KEY SUPPLIED IS LONGER THAN KEY LENGTH OF DATA SET

Explanation
The key supplied for positioning was longer than
the key length of the data set.  For example, the key  specified by
FROMKEY is longer than the key length of the data set.

System action
The system ends processing of this command.

System programmer response
If the error recurs and the program
is not in error, look at the messages in the job log for more information.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support Center. Provide the JCL and the SYSOUT output for the job.

Programmer response
Specify the correct key on the command.
 Run the job again.

Source
DFSMSdfp

Module
IDCIO01