MIRO 和 F-90 差別

https://scn.sap.com/thread/1105616

When there is a  PO you need to use MIRO and not F-90

The posting from the G/R from the PO is.

GR
70 Asset               100
50 Gr/IR account            100

Invoice MIRO

50 Gr/IR account   100
31  Vendor                      100

When there is prices differences it will be posted normal on the asset

What you then want to do with F-90? When there is a PO the invoice should always be posted with MIRO assigned to the PO! Other wise you have problems with your GR/IR account and the PO still expect an invoice!