Automatic conversion of PO

For automatic PO creation from PR, follow the steps.

1) Material Master purchasing view tick automatic PO check box
2) Vendor Master purchasing view tick automatic PO check box.
3) Maintain Source list for Vendor & Material.(ME01)
4) Maintain Purchase Info Record.(ME11)
5) Create a Purchase Requisition.(ME51)
6) Use T.Code: ME59 & execute for PR for vendor, you will be able to create automatic PO.

Note-1:
During creation of PR , select check box of Source Determination in the 1st screen of ME51
Ensure that Purchase Info Record should be there.
If you have more than one vendor then fixes only one vendor in source list.