Here, the account determination happens directly from MB1A and not from the OBYC. In case Movement type given is 201(Consumption for cost center from warehouse), at the time of MB1A system asks for the COST CENTER & GENERAL LEDGER. Movement type - 261 (Consumption for order from warehouse) – VBR: for internal goods issues (for example, for cost center) Movement type – 702 (Goods Issue – Physical Inventory difference) this is triggered because of the movement type 102, which is given while calculating the difference – INV: for expenditure/income from inventory differences Note: this setting is required if warehouse management is active.Movement type - 561(Receipt per initial entry of stock balances into unrestricted-use) In some cases it would be required then to change this reference movement type with some other movement type. If a new IM movement type was created copying a standard movement type, the reference WM movement type will also get copied accordingly. For all these movement types a reference WM movement type is entered under column “Reference Movement type WM”. In this screen on the left all IM movement types are populated.
Select “Assign WM Movement Type References to IM Movement Types” SPRO> Logistics Execution> Warehouse Management> Interfaces> Inventory Management> Define movement types
The values of this key are SAP predefined and cannot be changed. The account modification key is to differentiate account determination for the goods movement.