Third Party sale error

Dear Gurus,

The below error does not allow me to save the P.Order. I am configuring the standard third party sales schenario where the Item category is TAS and Schedule Line Cate. used is CS.

The material type I used is Trading Goods. I created a sales order with the TAS item which generated a PR using which I was trying to create a PO.

Kindly help me.

The error is:

Sales document item 2500500189 000010 is not defined for the transaction

Message no. V1198

Diagnosis

You have tried to carry out a business transaction for this sales and distribution document item which, for this item, is not allowed.

This may be due to the fact that this item is not part of a make-to-order production with cost management in the sales order.

Procedure

Please check your entries.

Many Thanks

Kumar