Symptoms
- Only one model name fails while other models authenticate normally.
- The configured value resembles a display name or stale alias.
Likely causes
- The model ID is misspelled, renamed, removed, or copied from another provider.
- Case, punctuation, or a provider prefix differs from the published ID.
How to diagnose
- Search the live models page for the exact raw ID.
- Compare punctuation and provider prefixes character by character.
- Confirm the client did not silently rewrite the model name.
Fixes
- Replace the value with an exact current catalog ID.
- Store model IDs in configuration so they can be changed without code edits.
- Remove stale hard-coded aliases from fallbacks and scheduled jobs.
How to verify
The corrected ID appears in the live catalog and succeeds in a minimal request.