Knowledge Management

Question:
Here's the detailed explaination to my problem
Transaction Code : ME51 (Purchase Requisition)
First Screen : (Compulsory entries in IDES)
Enter Document type : AN
Delivery Date : 13.03.03
Plant : 1000
Purchasing Group : 001
Second Screen (Item Overview Screen) :
Item Category : Blank
Account Assignment : Blank
Material : Any
Descrition : Any
Quantity : 1000
.
.
.
so on....
The above indicates a SAVED purchase requisition for a material in Plant 1000 in Company Code 1000 in IDES Server with purchasing group as 001. Here, as you might have noticed that, I have kept the Account Assignment Field as BLANK means it is a Stock Item and should be posted to Stock account. But, when I enter the Plant 5555 (Plant configured by me) in same company code and purchasing group as P1, the system isn't allowing me to leave the Account Assignment field as BLANK thereby preventing any posting in stock account. Presently, I have tried using K (Consumption A\c) with the said data then the system works fine and the PR can be saved.
So, to sum up, I would there's any type of configuration in customising by which, I can make the account assignment field a non-mandatory one and make postings in stock account.
The error message shown in Account Assignment is mandatory
I hope you got the problem, you can reply at
nandishm@rolta.com

nandish_mehta@hotmail.com

Anywayz, thanks for your help,
Regards,
Nandish Mehta
Answer:
Hi Nandish,
Did you set up the link between your new plant and the Valuation Group Code via Transaction OMWD? This would enable you to set the logical mapping between the Valuation Area (at your plant level) and CoA and Valuation Group Code which is at the Company Code. The problem I might guess was that you have set up the link between Valuation Group Code and Valuation Class and G/L Account via Transaction Code OBYC. However, there has not been any link between Valuation Group Code and your Plant and therefore, the system can not automatically determine the account assignment once the PR is created.
Cheers,
HT