AMROUN Lysa, Firstly, apologies for the delayed response here.
If the issue still persists and you haven't done these already, please try these to isolate;
- Ensure that you have a valid API key for the "Bring Your Own Data" service. If your API key is invalid or has expired, you may not be able to create an AI search index.
- Incorrectly mapped index fields may cause such issues. Please make sure that the fields in your index are correctly mapped to the data source fields, as outlined in this doc: Troubleshooting and best practices for Azure OpenAI On Your Data
- If you’re using custom headers, try reducing the header volume. Future API versions may not support custom headers, so it’s best to avoid relying on them.
Ref: Azure OpenAI Service frequently asked questions
Kindly let us know, I'll follow-up with you further.
If the answer helped (pointed, you in the right direction) > please click Accept Answer to benefit the community find answers quickly to similar question_._