SAP Note 13725 - Several line items for transfer postings

Symptom:

When you create a transfer posting by entering a line item, the
system automatically generates a second line item as soon as the
document is posted.
The first line item updates the issuing stock, the second line item
updates the receiving stock. This procedure is primarily used for the
following movement types: 301-304, 309-314, 321-324, and 401-404.

However, this procedure is not used in the case of placements in
storage from or (in the case of reversals) to an in-transfer stock or
an in-transit stock. This applies primarily to movement types
101-102, 122, 305-306, 315-316.

Cause and prerequisites

This procedure ensures that a separate line item is generated for
every material segment for which inventory can be posted.

Solution
Please consider these facts for your analyses and reports.

Key word: Transfer postng