When the [Sync] button is not active you cannot start the synchronization.
Not active [Sync] buttonWhat to do
The [Sync] button is not active, check the following.
For [Merge all cluster printers]: Check if all printers are connected.
For [Merge with main printer ] and [Overwrite by main printer]: Check if the main printer and at least one other printer are connected.
Then, start the synchronization.
NOTE
When you are able to start a synchronization but one or more printers are disconnected, you receive a warning.
Confirm start of synchronization with disconnected printers