1Z0-1127-25 Using OCI Generative AI Service Practice Question
A developer is using the OCI Generative AI service API and receives a '400 Bad Request' with error 'Model not found'. What is the most likely cause?
⚠ Common exam trap
Many candidates confuse HTTP status codes and error messages, assuming any 4xx error is due to authentication or region issues, when in fact the specific 'Model not found' message directly points to an invalid model identifier.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The model ID is misspelled or does not exist.
The '400 Bad Request' with 'Model not found' error indicates that the model ID provided in the API request does not match any available model in the OCI Generative AI service. This is most commonly caused by a typo, incorrect model name, or referencing a model that has been deprecated or removed from the service catalog.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The model ID is misspelled or does not exist.
Why this is correct
The error directly states 'Model not found'.
- ✗
The API request lacks authentication.
Why it's wrong here
Authentication issues result in 401 or 403 errors.
- ✗
The input exceeds the maximum token limit.
Why it's wrong here
Input too long would give a 'Input too long' error.
- ✗
The endpoint region is incorrect.
Why it's wrong here
Incorrect region would give a different error, like 'Endpoint not found'.
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