48002: Callback URL is invalidPositive FeedbackNegative FeedbackERROR: 48002error-48002 page anchorPositive FeedbackNegative FeedbackFRONTLINEERROR Descriptiondescription page anchorPositive FeedbackNegative FeedbackCallback URL is invalid Possible Causespossible-causes page anchorPositive FeedbackNegative FeedbackThe Callback URL provided is invalid. Possible Solutionspossible-solutions page anchorPositive FeedbackNegative FeedbackMake sure that you provided a valid Callback URL.