EDG4052I

Explanation
The current request is to open an existing tape
data set for output. The tape data set is not the last one recorded
on the volume. Although you have specified the correct data set name,
the installation options specified in the DFSMSrmm parmlib, MASTEROVERWRITE(LAST)
and MASTEROVERWRITE(ADD) allow only the last data set to be used for
output.
In the message text: volser
Volume serial number

System action
If DFSMSrmm is running in warning mode, the volser is
used and DFSMSrmm issues message EDG4004I. If DFSMSrmm is operating
in protect mode, DFSMSrmm rejects the volume and issues message EDG4005E
or EDG4006E.

Operator response
See the operator response for message EDG4004I
or EDG4005E that DFSMSrmm issues after this message.

System programmer response
Ensure that the tape request specifies
either a data set sequence number in the JCL higher than or equal
to the last recorded data set on the volume. If the volume was rejected
because of incorrect DFSMSrmm control data set information, update
the DFSMSrmm control data set.

Source
DFSMSrmm

Module
EDGSOCE

Routing code
2,3

Descriptor code
3