ANTC5408W

Explanation
In the message text:entity
This indicates what kind of XRC entity the message refers to.
The valid values are:SESSION
The message refers to an XRC session.
CLUSTER
The message refers to a XRC cluster.

While processing an XCOUPLE DELETE or XCOUPLE
PURGE command, the XCOUPLE-related information for XRC session session_id in
master session msession_id could not be removed
from the data set data setname.
If the MASTER
data set is indicated, the XRC session is now able to process independently
of the master session, but other XRC sessions that are associated
with the master session can not be aware that the session should no
longer be associated with the master session.
If the STATE data
set is indicated, other XRC sessions can now operate without requiring
that this session be active. This XRC session cannot operate until
the associated STATE data set indicates that the session is not part
of an XCOUPLE session.
The return code return_code and
reason code reason_code indicate why the information
in the data set could not be removed.

System action
XRC functions are active.

System programmer response
If the MASTER data set is indicated
in the message, to ensure other sessions are not affected, follow
the procedure in “Removing Extraneous Session Information from
the MASTER Data Set,” z/OS DFSMS Advanced Copy Services.
If the STATE data set is indicated in the message, follow the procedure
in “Removing Extraneous Session Information from the STATE Data
Set,” z/OS DFSMS Advanced Copy Services,
to permit this XRC session to operate correctly. See Table 1 for an explanation of the return
and reason codes.

Source
Extended remote copy (XRC).