Hi  @Yoann Burnel

 , it looks like you are trying to update a readonly attribute. First guess is this is updating a base channel name? If so, just update the friendly name instead

Thanks @Woody Butler

for your very fast reply. Trying to add a newly created base conversation channel to a parent channel (in this case Decile Launch 28), but for some reasons the system says error when adding it, while the same process did work before.