When an admin attempts to verify an organization on the Developer Dashboard verification page, the process fails with GraphQL error 1891871. This error occurs because the admin has already reached the maximum limit of verifying five organizations. The error message from the mutation OCDevManageOrganizationIndividualVerificationAgreementModalAddToResponsiblePartyMutation suggests three possible resolutions: remove admin verification from another organization, have a different admin verify, or use business verification instead.