App Validation failing for no clear reason

Hello valuecase-tim, 

Thanks for bringing this issue to our attention.

Since the Bot ID validation passes, the package is being parsed successfully and the failure likely occurs during the automated Teams app installation step. Verify that the ZIP contains only manifest.json, color.png, and outline.png at the root, confirm icon dimensions and filenames, and review the staticTabs section as the tab definitions appear incomplete (missing properties such as name, contentUrl, and websiteUrl). Also test installing the same package manually in Teams to determine whether the issue is with the app package itself or the App Validation pipeline.