"Conflicts" error message when saving entity updates

If you are doing in-context editing of an entity at the same time as another user and you're trying to save your changes more or less at the same time, you will get a Conflicts error message, highlighting that Some fields have been updated since they were loaded, asking you to Select current value below before saving. 

If you get this error message, follow the on-screen instructions and select a value before saving. Make sure to check the entity afterwards, to ensure that the correct values have been saved.