https://www.ibm.com/docs/en/ibm-mq/9.3.x?topic=header-cancelcode-mqchar4-mqcih
CancelCode (MQCHAR4) for MQCIH
The value in this field is the abend code to be used to terminate the transaction (normally a conversational transaction that is requesting more data)....
https://core.telegram.org/method/auth.cancelCode
auth.cancelCode
Cancel the login verification code
auth