If you are finding that DeltaWMS is asking to pick from locations higher up, for example, you might have stock that needs to be picked from location C-6-2, and the stock is being picked from higher up, for example, from location B-8-4. This article can give you information on how to tackle this.

To get the stock picked from a lower location, to resolve this, try adjusting your pick rule to 'Column, Row Asc'.

Please contact Delta Support, referencing the title of this article, and provide examples such as Location Codes, and pick information.