Validation in Accounting-how to get it to work for PO creation?

Question

Hi!
I created a validation rule from GGb0 to limit cost center assignment to some G/L expence accounts.
It works great for all the transactions that get posted to BSEG: Journal Entries, IR, GR.
How can i get it to work (to validation if it is a correct cost center with G/L expense account) during creating a PO type K (for expense PO's) from ME21N?
I know that it is a complete set of tables and PO is not triggering the validation because it is not creating a FI document, but i still need it to work!
Any ideas?
Points will be assigned!

Answer 1

Hi,
Can you please list out the coding done with this validation rule in Controlling via tcode OKC7 and/or GBB0.
I am using R/3, V 4.7 and not ECC.
While creating a Purchase Order or Purchase Requisition, Project expense account should only generate a validation error when an Account Assignment Category K (Cost Center) is selected but should not generate any validation error when the same project expense account is selected with an account assignment category A (Asset). Please note that this project expense account is commonly used expense ccount in PR/PO for thel fixed asset purchases and would like to have a validation rule so that it cannot be used with any cost center. Figured out there are two options 1. BAdI User Exit and 2. CO Validation Rule.
I would appreciate if anyone has the detailed coding part of the complex CO validation rule via OKC7 and commitment management part?
Regards,
Srinivas Puppala
Edited by: Srinivas Puppala on Aug 10, 2009 8:13 PM
Edited by: Srinivas Puppala on Aug 13, 2009 5:30 PM