Trainingpeaks Workouts will not transmitted to Garmin

I have now done the following tests:
Free practice in Zwift -> The data goes to Garmin and TP.
Training from Zwift -> The data goes to Garmin and TP.
Training from trainingpeaks -> The data only goes to TP not to Garmin!

How can i fix the last issue?

Hi @Uwe_R1 welcome to the Zwift forums.

This is a question for our friends at Trainingpeaks. They have a help center here:
https://help.trainingpeaks.com/hc/en-us