Purchasing Organization to Company code relationship question

Question

My client is running EEC 6.0 in production.  When the original configuration was done, the purchasing organization was incorrectly assigned to the company code (table V_T024E_Assign; menu path: IMG > Enterprise Structure > Assignment > Materials Management > Assign Purchasing Organization to company code).  This should have been left blank since we wanted the purchasing organization to serve multiple company codes.  I know that I can blank out the company code and assign each plant ( e.g.  plants for company code 1 and plants for company code 2) to the purchasing organization.
The question that I have is:  What impact would this change have on any of the existing purchasing related transactions currently in the system (e.g. purchase orders, invoices, receipts, issues)?  Would it cause any problems?
Any assistance is answer this would be appreciated.  If you need more information, please let me know.
Greg Brown
FI/CO consultant

Answer 1

(1) You can assign a purchasing organization to one company code. This is company-specific purchasing.
(2) You can assign a purchasing organization to no company code but to plants.
This purchasing organization can then procure for all plants assigned to it, irrespective of the company code to which the plant belongs.
Since each plant must be assigned to a company code, the company code can be determined via the plant in each procurement transaction, even if the procuring purchasing organization is not assigned to a company code.
A purchasing organization must be assigned to one or more plants. This is plant-specific purchasing.
When you will delete the realtion of P.Org and Company code. It will shift to the second situation where P.Org is assigned to Plant and since Plants are assigned to company code so it will refer to the respective company code.
Thanks,
Birender Agnihotri