Both movement types are generated by SD activities.
Movement type 641 & 645 use following concepts from MM
- Stock in transit: Quantity of a material that has already been withdrawn from storage at the issuing plant on the basis of a stock transport order, but has not yet arrived at the plant to which it is being transferred (receiving plant).
- Stock transport order: Purchase order used as a mechanism to request or instruct a plant to transport material from one plant to another plant within the same enterprise.
In movement type 641
The quantity is transferred using an SD delivery from unrestricted-use stock of the issuing plant to 'stock in transit' of the receiving plant.
The goods receipt for the 'stock transport order' takes place using movement type 101 and can, if required, refer to the purchase order or to the delivery.
Movement type 645 is used for goods issue for a cross-company 'stock transport order' in one step. When a goods issue is posted using movement type 645, a goods receipt line is generated automatically.