DSXchange

Hi,
sometimes i am getting warning messages a lot(same warning message).
For example.
APT_CombinedOperatorController(0),0: Null string argument.

Above warning message repeating multiple times.
Is there any technique to limit 2 or 3 warning messages?

Sure. Limit the number of null string arguments.

In other words, treat the disease and not the symptom.

you have not handled for the columns for which you are getting null from the source. Try one of these solutions:
1. Use IsNull() or IsNotNull where ever required in Transformer.
2. Also if your target is a seq file then Use Null field value constraint and make equal to ''. thats it
3. If you just want to limit the number of warnings then you can add a message handler constraint inthe Director as well.