Error: One or more of the constituents selected were not rejected. You may not have sufficient rights to reject the constituent. - when rejecting constituent updates in the Raiser's Edge Luminate Online Plug-in
When users are working in the RELO plug-in they may notice the option to process or link the selected record are grayed out. In an effort to remove the transaction from the plug-in users may try to reject this update and receive the error message "One or more of the constituents selected were not rejected. You may not have sufficient rights to reject the constituent" regardless of Security rights designated in Admin > Security.
This error message occurs because the constituent update is currently checked out by another user. The username working with the constituent update will be displayed under "Date/Status" column.