When attempting to invite a user to an app release channel in the Developer Dashboard, the bulk invite mutation (OCDevManageApplicationReleaseChannelInviteUserModalBulkInviteUsersMutation) fails with GraphQL error 1891965. This error occurs if the target user recently declined an invitation to the release feed and has not yet completed the cooldown period. The error message suggests trying again later but does not provide the duration of the cooldown or a method to bypass this restriction.