21474: API User must be the parent account to transfer phone numbers.Positive FeedbackNegative FeedbackERROR: 21474error-21474 page anchorPositive FeedbackNegative FeedbackERROR Descriptiondescription page anchorPositive FeedbackNegative FeedbackThe API user can not be a subaccount, must be a parent account to transfer phone numbers between parent and child accounts.