As per the documentation : https://cloud.google.com/appengine/docs/locations ?Mumbai is supported location for App engine.
The only reason for failure could be the organization level constraints that might have been been enabled by your org (https://cloud.google.com/resource-manager/docs/organization-policy/defining-locations) -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/a5e72f0b-3887-4a29-b78b-af9ca6173382o%40googlegroups.com.
