40400: Resource not found

The requested resource does not exist, often because it has been deleted or the path or identifier used to reference it is incorrect.

What you should do

Check the identifier or path used to reference the resource. The accompanying message names what wasn't found; confirm it exists and that identifiers such as the app ID or key ID are correct, including their case, since they are case-sensitive.

Why it happens

The resource referenced by the request does not exist. It may have been deleted, or the path or identifier used to reference it may be wrong. A mismatch in the case of an identifier is a common cause.

What you'll see

The error is reported with code 40400 and HTTP status 404. The message names the missing resource, for example a missing application or key.