Ensure that you have the Callback URL from the PingOne console.

  1. In PingOne, go to Connections > External IDPs.
  2. Locate the appropriate IdP and then click the details icon to expand the IdP.
  3. Click the Connection tab.
  4. Copy the callback URL and paste it in a secure location.
  5. Go to PayPal for Developers at developer.paypal.com.
  6. In the Rest API apps section, click your application name.
  7. In the Sandbox app settings section, locate Return URL.
  8. Click Show.
  9. For Return URL, enter the value that you copied from the PingOne console.
  10. Click Save.