Hi @VasilisK Welcome to Microsoft Q&A! Thanks for posting the question.If I understand correctly, you want the Azure Open AI response to exclude the references ([doc1], [doc1] etc.) from response when using your own data.If that's the case, I am afraid it is not supported to hide citation/reference from the response. You need to scrub the response in your code to remove the citation from the code.
For example, here is a sample python code which extracts [doc1, doc2] references from the response.
Additionally, you can provide your feedback over Microsoft Azure Feedback portal. Please let me know if you have any questions. Thanks Saurabh ---Please 'Accept as answer' and Upvote if it helped so that it can help others in the community looking for help on similar topics.