In-App purchase no longer works with User-based VPP?

Hi, I found In-App purchase feature is restricted even with User-based VPP.

I understand Device-based VPP does not accept In-App purchase, however User-based VPP accept In-App purchase. (It works on iOS 15 device actually.)

When I tried subscribe ChatGPT on iOS 26 device using User-based VPP, an error dialog is shown that explains In-App purchase is not allowed.

sysdiagnose shows logs belog:

情報	2025-10-26 23:58:22.350841 -0700	storekitd	[Client] (ChatGPT)  Initializing client
デフォルト	2025-10-26 23:58:22.353982 -0700	storekitd	[Client] (ChatGPT) Initialized with server Production bundle ID com.openai.chat and request bundle ID com.openai.chat]
デフォルト	2025-10-26 23:58:22.354020 -0700	storekitd	[CanMakePayments] In-app purchase disabled because app com.openai.chat has MID based SINF

In iOS 15 device, no storekitd logs are found and appstored and several processes seem to handle In-App purchase.

Does In-App purchase no longer work with User-based VPP?

Thank you.

The administrator cannot use the App and Books API to make in-app purchases.

A user can make in-app purchases when the administrator licensed the app using a user-based license. In this case the in-app purchase is charged to the Apple Account associated with that license.

Managed Apple Accounts do not support commerce, so they cannot be used to make in-app purchases.

If the behavior you're seeing does not match the above, please reproduce the issue, take a sysdiagnose, and submit feedback with the sysdiagnose attached, and provide timestamps indicating when the in-app purchase failed.

In-App purchase no longer works with User-based VPP?
 
 
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