What are these SDActivityAdvertiser processes in my Mac OSX syslog

Question

I checked my console application and found many of these entries in my log:

17:20:24.680 : SDActivityAdvertiser::continuity:didFailToStartAdvertisingOfType:withError: Activity (Der Vorgang konnte nicht abgeschlossen werden. (com.apple.identityservices.error-Fehler 200.)) 

To many, I mean about 30 in the last 3 minutes. Does anyone know what it is?

Answer 1

In the General area under System Preferences, uncheck the Allow handoff between this Mac and iCloud devices.