DSXchange

Hai guys,
when i tried to look up with hash stage,i was getting some warnings like "Hashed_File_33.DSLink27: ds_uvput() - Write failed for record id '<Missing or NULL>'" though it ran. i dont know what could be the problem for this one. Can you help me guys.

The messages are from when you were writing to the hash file. They mean you wrote a row with a null primary key, which appropriately is rejected. To suppress this problem, use a constraint on that link to only write if the primary column value is not null. If null data shouldn't be happening, then fix the problem elsewhere.