The item “Ria jarig” was not on the Sony phone. So i delete the calendar storage.
I checked the calendar, it was empty.
After a new sync items came back in the calendar but i did get the debug txt again and “Ria jarig” was still not there.
I delete “Ria jarig” from the calendar in the Motorola phone an did a sync on the Motorola and after that on the Sony.
I did not get the debug txt anymore and the sync was fast.
Then I put in “Ria jarig” in the motorola phone and sync both phones, “Ria jarig” showed up in the Sony phone and no debug txt game up.
So, problem solved, tanks for the help.