VI-JOB IM_TRANSACTION_HEADER

RUNNING SAGE 100 V2017 .

trying to create a VI job to adjust inventory for returns.    

what are the transaction types mean?  1,2,4,6,8  ?

also, what fields do I need to import into to make a successful entry.

for EntryNo , can i just select Next? for the Opeeration?

Thanks

Peter