DEAR WMS APP - Seach items by SKU

Currently WMS app allows user to search stock by UPC, or by scanning barcode, however it would be fantastic to be able to search by item SKU. 

When we are in the warehouse and want to check stock availability of an item, it is impossible to know the item UPC off by heart, especially for businesses that have multiple thousand items, and an item is not always to hand to be able to scan a barcode. A simple function to add search by SKU would make the app much more user friendly. Same for pick, pack and all other processes within the app.