I'm using App Store Connect API to automate onboarding/off-boarding user invitations for my team members when they start working on my app.
Once devs join the team, I'd like to invite them to the specific app's beta test group. This requires some additional work after the user has joined the team because unlike visibleApps, there's no way to initially indicate the beta test groups that a user should have access to.
One challenge I'm finding is that people don't immediately join the team on time so polling feels a bit excessive/wasteful.
Is there some recommended mechanism for adding users to the internal test flight group, or is there a way to trigger a webhook when the list of users is updated. I noticed that there's a new /v1/marketplaceWebhooks API so I imagine this is the recommended format for registering callbacks.
Any assistance here would be greatly appreciated.