Log in to your Okta tenant admin.

Go to Applications > Applications.

Select Create App Integration.

For Sign-in method, select OIDC - OpenID Connect.

For Application type, select Web application.

Select Next.

This takes you to the Create OpenID Connect App Integration form.

Under GENERAL SETTINGS, for Application name, enter a name for your application.

Use a name that's easy to identify, such as Dotdigital.
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For Grant type, select Authorization Code and Refresh Token.

For Sign-in redirect URIs, select + Add URI, and enter:
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​https://login.dotdigital.com/Sso/Authenticate.

For Initiate Login URI (optional, but recommended):

We recommend that you also add the following URL in the Initiate Login URI field:
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https://login.dotdigital.com/Login.aspx?TrySsoLogin=1
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Adding this URI allows users to start the Single Sign-On process for Dotdigital directly from the Okta dashboard app tile, providing a smoother and more direct login experience. This setting is optional, SSO will still work without it, but can help ensure login from the Okta dashboard functions as expected.
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You don't need to enter a value for Sign-out redirect URIs or the Trusted Origins section.

For Assignments, select the policy that matches your security requirement.

To get started quickly, you might want to Allow everyone in your organization to access.
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Select Save.

This takes you to the general settings of your application.
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Under the heading Client Credentials, copy the Client ID and save it for later.

Copy the Client secret and save it for later.

Under General Settings, copy your Okta domain and save it for later.

From the top menu, go to Security > API.

Find the Authorisation server you want to use, and select the Edit icon.

Under Settings, find the Metadata URI, and copy the URI and save it for later.

The metadata URI is your well-known endpoint.