@Nirmalsing Patil I'm glad to see you were able to identify the solution for this issue. Thanks for posting your solution so that others experiencing the same thing can easily reference this. Since the Microsoft Q&A community has a policy that the question author cannot accept their own answer, they can only accept answers by others, I'll repost your solution in case you'd like to Accept the answer.
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Issue:
You are encountering the below ServiceRequestError when attempting to analyze a PDF document using the Azure Document Intelligence service.
ServiceRequestError Traceback (most recent call last)
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ServiceRequestError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:997)
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Resolution:
You confirmed with Azure-sdk-team that by adding connection_verify=False
when you create the client will help to disable the ssl verification. https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/core/azure-core/README.md#configurations