Account assignment in Purchase Order

Question

Hi,
In my project Purchase orders are having account assignment N network. This is going to be implemented. Previously my client used budgeting scenario with Internal Order but now Investment Program will be used with WBS budgeting.
The problem is for a particular PO document type "Capital PO" when I am assigning N as Ac *** Type then it is automatically changed to F by default and asking for Internal order which is a mandatory field.
To remove this problem in SPRO I changed the mandatory field CO/PP order to OPTIONAL for Acc *** Category F and then the problem got partially resolved. I can now assign a Network activity to the PO. But before saving the N which was entered as the acc *** type in the line items are automatically changing to F.
I have tried out several ways but not found a problem. Somebody may have an idea of why its happening?
Is there some user exit for this particular document type is this issue to be solved with the help of an ABAP er. Please guide me.
Suman

Answer 1

Hi Suman,
Please maintain the standard settings :
1.Account Assgmt Gen N
2.AcctAsstCat Projects Q.
a)So while assigning the material component to Network Activity for stock Item (L) System will create a PR on the basis of following :
Acctasstcat Q
Special stock Q
Valuation M
Consumption P
Movement type 281.
b)While assiging Nonstock item to activity the following will be the case:
Acctasstcat N
Consumtion V
Movement type 281
So system will create PR in both cases but while receiving goods in MIGO ,for nonstock the activity will be debited and in case of stock inventory will be debited and stock will be received as project stock Q.
Regards,
Muzamil