EDG2100I

Explanation
The DFSMSrmm subsystem encountered an error performing
an I/O operation on the DFSMSrmm control data set or journal.
In
the message text: file_name
Can be MASTER or JOURNAL.
function
An internal representation of the requested function
return_code
The code returned by VSAM in register 15 or an DFSMSrmm internal
return code. Possible values for DFSMSrmm internal return codes are: F0
Error in SHOWCAT
F1
Error in BLDVRP
F2
Error in DLVRP
F3
Error in DYNALLOC
FC
DFSMSrmm does not support the record read from the control data
set
FF
DFSMSrmm does not support the I/O request made

reason_code
The RPL reason code returned by VSAM, or zero for DFSMSrmm internal
return codes.
vsam_key
The key of the requested VSAM record

System action
The current I/O request fails.

Operator response
Report the error to the system programmer.

System programmer response
The error occurred during VSAM processing.
If the DFSMSrmm control data set is damaged, DFSMSrmm issues message
EDG2101I to describe physical errors. For logical errors, you might
have to recreate the DFSMSrmm control data set using the latest backup
copy, along with the journal. For DFSMSrmm internal return codes,
the action depends on the return code. For F1, there was insufficient
storage to satisfy the request. Increase the region size to correct
the problem. For FC, your control data set contains records that are
not supported by DFSMSrmm. You should ensure that the VSAM data set
being used contains only valid records. Ensure you use the DFSMSrmm-supplied
utilities to perform functions against the DFSMSrmm control data set.
For FF, report the error to the IBM® Support
Center
For interpretation of Record Management Return Codes
and Reason Codes for OPEN and CLOSE, refer to the z/OS DFSMS Macro Instructions for Data Sets. 

Source
DFSMSrmm

Module
EDGMFIO

Routing code
1

Descriptor code
3