What is the procedure in SAP for Initial stock uploading? Mention the accounting entries also.

Initial stock uploading in SAP from the legacy system is done with
inventory movement type 561( a MM transaction which is performed).

Material valuated at standard price: For a material valuated at
standard price, the initial entry of inventory data is valuated on the basis
of standard price in the material master. If you enter an alternative value
at the time of the movement type 561, then the system posts the
difference to the price difference account.

Material valuated at moving average price: The initial entry of
inventory data is valuated as follows : If you enter a value when
uploading the initial data, the quantity entered is valuated at this price.
If you do not enter a value when entering initial data, then the quantity
entered is valuated at the MAP present in the material master.

The accounting entries are: Inventory account is debited and Inventory
Historical upload account is credited.