Internal Purchase Order is known as Stock Transport Order in SAP. It is use when a company have multiple plants which purchase from each other.
1. Buying Plant create Purchase Order Type UB directly from ME21N or convert from MD04 during MRP run.
2. A requirement will be prompt by MRP in Selling Plant.
3. If there available stocks, Selling Plant will trasferred it
to the designated storage location before Buying Plant can do a
receiving.
SAP Postings in 4.6x
:-
Selling Plant Transfer via transaction code
MB1B
movement type 351 to transfer storage location.
Receiving Plant recieve it via transaction
code MIGO_GR movement 101 transfer
storage location.
351 - Transfer Posting
by Selling Plant
MM documents
Stocks move from Selling Plant unrestricted
to Buying Plants transfer in MMBE
In MMBE, double click Buying Plant and check
the field stock in transit to check the stocks that were being transfer
from
the Selling Plant
FI documents
Debit Buying Plant
Inventory 999
Credit Selling Plant Inventory
-999
101 - Goods Receipts
by Buying Plant
MM documents
Stocks move from Buying Plant transfer to
Buying Plant unrestricted in MMBE
No FI documents
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