ANTT0024I

Explanation
The XEND command is canceled because of a non-YES
response to the ANTT0022A prompt message.

System action
The command is canceled.

System programmer response
To end the session, reenter the XEND
command and respond YES to the ANTT0022A prompt message. Abbreviations
of YES are not acceptable. If you are issuing the XEND command from
a CLIST or REXX EXEC,
place the response on the stack before running the EXEC.

Source
Extended remote copy (XRC).