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Only use the list operations SELECTLIST, GET_ENTRY and UPD_ENTRY against the list TRIG_LIST. Only ever issue UPD_ENTRY operations against entry number 1. When a trigger function terminates it returns 2 things to the invoker:

TRIG_RETC

It : is an A(2) field which must be defined in the data dictionary. At the point of return it must be set to "OK", "ER", and in some situations, "VE". See the following sections for more details of the meaning and use of these return codes.

TRIG_LIST

It : is the 2 entry working list containing 0,1 or 2 entries previously described. You may alter the data in the first entry passed by using the UPD_ENTRY command. If you do this in a "before" operation then you will actually alter the data that is inserted or updated into the table.

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