Inbound delivery

Hi Friends,

I'm trying to create inbound delivery from the purchase order. I'm got the error messages in the log,

-No item category exists (Table T184L EL SRVM L )

-Enter a material or an item category

I was able to clear the first message by maintaining the required values into the table T184L using transaction 0184.

But the second error message(Enter a material or an item category) still persists. Pls help me.

Thanx.