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When the Connect Account API which uses the basic account connection UI is called, a window appears as below asking you to decide which IDP you will use.
In the event that the developer wants to implement the account connection UI (i.e. the developer does not want to use the basic account connection UI), connect account API by IDP is provided. In this case, a connect account button for each IDP should be placed in the account connection screen, and when each button is clicked, the connect account API for each IDP should be called.
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