I am able to deploy an existing app but this error has occured only on app that was created yesterday.
I understand you created the app using the Admin API below
https://www.mongodb.com/docs/atlas/app-services/admin/api/v3/#tag/apps/operation/adminCreateApplication
Was the existing app also created using Admin API or via the UI?
@ other participants in this thread, did anyone else experience the error after using the Admin API to create their app?
Regards