Blocking the filling of a cost center in the creation of a Purchase Order

Question

Hi All,
I've some cost center which are obsolete and mustn't be used in the creation of a Purchase Requisition (or Purchase Order).
Could anyone suggest me how to do it?
Thanks a lot
G.
Edited by: Jeyakanthan A on Jun 2, 2011 1:28 PM

Answer 1

Hi,
The transaction me21n uses the authorization object A_S_KOSTL for cost
center. However, the authorization object A_S_KOSTL is not related to
the cost center that is displayed in the account assignment view of th
purchase order item, but its scope is to limit the access to fixed
assets belonging to the specified cost center (see the note 856248).
There is no standard authorization object that you can use from
transaction me21n to validate the cost center that you see in the
account assignment view at item level. The same can be said about the
purchase requisition creation (me51n).
So, I have three options for you to consider.
First Option:
There is an existing possibility to perform user defined checks during
all kinds of postings which finally lead costs in CO. With transaction
OKC7 you may define a validation which is also processed during
purchasing. You can explore the possibility of achieving the
functionality you need by making customizing changes using transaction
OKC7.
Second Option:
You could use userexit enhancement MEREQ001. For further information
please see note 310154.
Third Option:
Also, you may consider instead of an authorization check for cost
centers you can activate an authorization check for G/L accounts.
Therefore the following settings are required:
I. Customizing -> Materials Management -> Purchasing -> Purchase
    Order -> Set Up Authorization Check for G/L Accounts:
    activate the G/L account authorization check for the required
    company code
II. Transaction FS02 -> View: Control data: enter the authorization
    group
BR
Nadia Orlandi