Appian-Sharepointline integration using Client Credentials - Azure ACS

I am trying to integrate with our Sharepoint Online platform in order to take data from it. I followed the configuration steps in the appian document (https://docs.appian.com/suite/help/24.2/Integrating_Sharepoint_with_Appian_CS.html), using the client credential - Azure ACS option but it gives me the following error:


Could you help me solve the problem?
Thank you very much.

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