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This can be done in the SharePoint admin center under API access "tenant.sharepoint.com/_layouts/15/online/AdminHome.aspx#/webApiPermissionManagement"
An entry SharePoint Connector for Jira will be listed once the SharePoint solution is installed
Approving the API access will allow the app to start the communication with our APIs
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Once you click on Approve a popup will appear where you need to consent the app
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Once accepted a redirect will be made and you can close the popup after that and users can start using the app.
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