# Which Problems Are Solved
Introduced with #6909, the authentication check (API client) and the
token verification on the introspection endpoint where parallelized to
improve performance. Only the first error would be considered and
returned (and the second completely ignored).
This could lead to situations where both the client authentication and
token verification failed and the response would result in a 200 OK with
`active: false`.
# How the Problems Are Solved
- The client authentication check error will always be prioritized.
- An error in the token check will no longer terminate the client
authentication check.
# Additional Changes
None.
# Additional Context
- reported in Discord:
https://discord.com/channels/927474939156643850/1242770807105781760
85d7536d44