The system programming command, SET TDQUEUE with the ATIUSERID option, specifies the userid for a transient data trigger-level transaction that is not associated with a terminal. The destination facility must be a file.
CICS performs a surrogate user security check against the userid of the transaction that issues the SET TDQUEUE command, to verify that the transaction userid is authorized as a surrogate user of the userid specified on the ATIUSERID parameter.