Amazfit Watch faces

Hello,
I created a watch face, all the files are well created. However, during synchronization by the Zepp Life application, I have this message which is displayed:
"To synchronize the current watch theme, one of the device's watch themes must be overwritten."
However I can't choose anything except "Later" which cancels the synchronization to the watch.
Do you have a solution please?
I am using Android 11.

Cordially.

reinstalling and trying again worked for me

Hello! I think the best solution is to delete one of the watchfaces you installed on the band, it works everytime for me. Let me know if it helped you.