Hi Jonathan Brotto
Try This
IF @object_type = '24' AND @transaction_type = 'A'
BEGIN
If exists ( SELECT R1.CheckNum
FROM RCT1 R1
INNER JOIN ORCT R0 ON R1.DocNum = R0.DocEntry
WHERE R0.DocEntry = @list_of_cols_val_tab_del
and R1.CheckNum in ( select CheckNum FROM RCT1 ) )
BEGIN
SELECT @error = 1
Select @error_message='Check number Duplicate'
END
END
Regards
Kennedy