Identify the message to be processed by a user routine with the TOKEN parameter of IXCMSGC. This 16-byte token can be obtained from one of the following:

• For a message user routine
  • The IXCMSGC QUERYMSG service (specify DATATYPE=MSGIN)
  • The RETMSGTOKEN parameter on the IXCMSGC SAVEMSG service
• For a message notify user routine
  • The RETMSGOTOKEN parameter on the IXCMSGOX service
  • The IXCMSGC QUERYMSG service (specify DATATYPE=MSGOUT)
  • The RETMSGTOKEN parameter on the IXCMSGC SAVEMSG service