IDC3307I ** DATA SET CANNOT BE OPENED FOR KEYED PROCESSING

Explanation
Only indexed virtual storage access method (VSAM)
and indexed sequential access method (ISAM) data sets can be opened
for keyed processing.

System action
The system ends processing of the 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
Change the JCL statement to specify a keyed
data set or correct the usage of the data set in the command.  Run
the job again.

Source
DFSMSdfp

Module
IDCIO02