2271 (08DF) (RC2271): MQRC_CONN_TAG_IN_USE
Explanation
An MQCONNX call was issued
specifying one of the MQCNO_*_CONN_TAG_* options, but the call failed because
the connection tag specified by ConnTag
in
MQCNO is in use by an active process or thread, or there is an unresolved
unit of work that references this connection tag.
This reason code occurs only on z/OS®.
Completion Code
MQCC_FAILED
Programmer response
The problem is likely to be transitory. The application should wait a short while and then retry the operation.