Welcome aboard to the Intuit Community, ncicchini.
I'm here to help get the support you need to show the items' SKU through the GoPayment app.
We have our dedicated forum for Intuit Developers that can assist you with this concern. In this community space, you'll be able to interact with developers, product experts and engineers about the GoPayment app.
You can post your question in this link: https://help.developer.intuit.com/s/
I'm here anytime you need help concerning the SKU for items. You can leave a comment below by clicking the Reply button below.