Hello, King.

I understand how inconvenient it can be when software lacks a feature that could make your business's process more efficient.

Please know that we're always looking for ways to make your experience with QuickBooks more convenient. While the option isn't yet available, you may consider following the workarounds shared on this thread.

I'll advise you to go into this resource to find out what else you can do with the PO: Add custom fields to sales forms and purchase orders in QuickBooks Online.

You can always get back to us if you have other concerns aside from the SKU availability on the purchase order. The Community is here to assist.