PO possible only with PR?

Question

Hi,
I want to make PO only through PR?
While making PO, a pop up screen should come like " Enter PR no#" and only after entering the PR it should go to the PO. Is it possible to make setting like this?

Answer 1

Dear,
   In case if you are creating a PO generally through "ME21N "you can not restrict the creation. As in that case the following fields become manadatory
1) Material
2)Purchasing Organization
3) Purchasing group
4) Vendor
5) PO quantity
6) Net price
The fields PR and RFQ in item level are not manadatory. In order to make them manadatory so that PO are generated only with reference to a particular document (namely PR /RFQ etc) we need to use the "Function authorization" so as to restrict the creation of PO
Path: SPRO -> MM -> Purchasing -> Authorization management -> Define function authorization for buyers -> Function authorization for PO
T.code : OMET
In this screen under " Possible reference objects" you get many options like
1) Reference to RFQ
2) Reference to PR
3) Ref to Ref PO and many more
In this screen select the Check box which says "Reference to PR" and then save it
Now iwhen you try to create PO it will not be created unless you give the PR number " yuou get the error message as " You have no authorization to create with out reference to another document"
In this way you can have a check on the PO that are created
Hope this helps you out
In case any further clarification rewuired do get back
Amin