Advanced Commerce API – 5000000 "Unknown error" when calling Migrate API

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Created Oct ’25

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We've been approved for the Advanced Commerce API. After receiving the approval, we completed the initial setup requirements (submitted a generic product ID and shared our subscriptions page deep link).

When testing the Migrate Subscription to Advanced Commerce endpoint in the sandbox, we receive a 5000000 error.

What could be the reason/s for it? There is no information, and the API call we make includes all required parameters. Could it be related to the fact that our new generic product ID status is "Missing Metadata"? Is there a way to understand what the issue is on Apple's side?

Answer 1 · 2w

galda OP

2w

Hey Tamiron,

I'm curious as to how did you manage to get an approval? Were there several submissions or did you just get it on the first go?

I know it doesn't answer your question at all but I'd really appreciate if you could share your experience. I see other people are struggling with the same lack of response from Apple