In this step, you specify whether the automatic creation of storage location data is allowed for goods issues and transfer postings.
This is advisable if you work with negative stocks and a material's first movement may be an outward movement.
Note that the reversal movement for a goods issue, for example, movement type 202 or 262, is not considered as an issue but as a receipt. If you only use the automatic creation of storage location data for reversals of goods issues, you do not have to allow negative stocks.
You have to allow automatic creation per plant first of all. You then have to explicitly allow the creation of storage location data for each movement type.
The storage location data is only created if the quantity is posted to 'standard' storage location stock. It is not created for receipts into a special stock (for example, into sales order stock).
The standard system is set in such a way that the storage location data is created automatically for all types of receipts (goods receipt with/ without reference, stock transfers, intial entry of stock balances, reversal of goods issues, etc.).