NOT EXISTS with two subquery fields that match 2 fields in main query

Background: Two different document types in a document management system. Both Doc Type A and Doc Type B have a Ticket #, and a Ticket Date. What we’re looking for: Doc Type A docs that don’t have a matching Doc Type B doc (NOT EXISTS) with the same Ticket # and Ticket Date. There like are Doc Type B docs that have the same Ticket # but NOT the same Ticket Date. We want to ignore those. Seems simple…. but I am stuck. So far what I have is something like this:

SELECT distinct ki110.keyvaluechar AS "Ticket #", ki101.keyvaluedate AS "Ticket Date"  FROM itemdata  left outer join hsi.keyitem110 ki110 on ( itemdata.itemnum = ki110.itemnum ) left outer join hsi.keyitem101 ki101 on ( itemdata.itemnum = ki101.itemnum ) WHERE   ki101.keyvaluedate BETWEEN '01-01-2021' AND '01-31-2021' AND ( itemdata.itemtypenum  = 178  ) -- this is Doc Type A  AND NOT EXISTS (select ki110.keyvaluechar, ki101.keyvaluedate from itemdata, keyitem110 ki110 , keyitem101 ki101 where --(itemdata.itemnum = ki110.itemnum) --Ticket # 

— ** the problem is here for Date: I need to say Date in Doc Type B doc is not the same as Date in Doc Type A doc using ki101.keyvaluedate)

AND itemdata.itemtypenum = 183) -- this  is DOC Type B