So I have encountered an issue, with how the picklist maps to the inventory location.
When the picklist was generated in this case, the inventory location was pointing to a location that no longer exist.
This creates an issue for the picking team because they have to go back to shipstations dashboard to confirm the actual location.
So for example:
In the Products Tab > Inventory and select a product, in the shipping tab, there is a Warehouse location field, which is not mapped to the inventory.
This field can be saying location X while location X has been deleted and a new location was created, lets say Shelf F, the shipping and inventory tabs should be mapped and this would omit issues for the picking team.