Service group.set not available

Hi all,
I am new on HA and I am runniong version 2023.7.2
I need to populate a group within a Action, but i have not group.set service available:

Service is not available, if I press Call Service it do nothing.
what I am missing? Thanks

Hi all,
I fixed issue adding:

group:

to configuration file. This pehaps enable the service group.set

Marco