No. SyncTime relies on the file copy mechanism provided by macOS, which returns an error if something goes wrong. If an error happens, SyncTime always displays it. If no error happens, with all probability the copy operation was successful and there’s no need to perform an additional verification of the copied data, which would double the time needed to complete a sync operation.

If you want to explicitly check that all files on the source have the same contents as the files on the destination, you can start a sync by right-clicking the sync item to open the context menu, then selecting Find unequal files.