19021: Only one channel can be set as primaryPositive FeedbackNegative FeedbackERROR: 19021error-19021 page anchorPositive FeedbackNegative FeedbackERROR Descriptiondescription page anchorPositive FeedbackNegative Feedbackis_primary can be set to true only for one channel Possible Causespossible-causes page anchorPositive FeedbackNegative FeedbackRequest with is_primary set to True for more than one channel Possible Solutionspossible-solutions page anchorPositive FeedbackNegative FeedbackEnsure only each channel has only 1 is_primary set to true