Why is my approved iOS app, distributed "privately as a custom app for business," not visible to my organization in Apple Business Manager? Issue

When I search for my company's internal app in Apple Business Manager, there are no matches. I've tried searching by name, SKU, and App ID. Searching by name returns four results, none of which is relevant.

Why isn't the app found?



Background

This is an iOS app that my company developed for internal use. Before publishing to the App Store, we opted to distribute "privately as a custom app for business."



We copied our organization's name (1) and ID (2) from Apple Business Manager to App Store Connect (3 and 4), to grant ourselves access to the app.





The app was approved yesterday, but it doesn't show up in Apple Business Manager. What are we missing?
I had a similar issue. It turned out that even though I was offering my app for free, I still had to fill out the 'Paid Apps' agreement in App Store Connect.