Aug 04 2020
I am trying to use Get and Post method in share Point Online from Postman . I performed all below steps till 4th step.
1. Register Add-In – SharePoint online2. Grant Permission Add-In – SharePoint online3. Retrieve the Tenant ID in Postman tool4. Generate access token
Once completing all steps when I am trying to use URL to get and Post it is showing Invalid Host Name and Error 400