SELECT a.OKCUNO as CUNO,a.OKCUNM as CUNM,b.OAORNO as CONO,b.OAORTP as OrderType,a.OKORTP as CustomerType FROM MVXJDTA.OCUSMA a JOIN MVXJDTA.OOHEAD b on a.OKCUNO = b.OACUNO WHERE SUBSTRING(b.OAORTP, 1,1) <> SUBSTRING(a.OKORTP, 1,1) AND b.OAORDT LIKE '20250428%' AND b.OAORTP in ('021','921')