Can not find credit action

In my 5.6, I cannot see a “credit” action. What I have is “return sale” - is it the same? - Or do I need a particular module to do the crediting?

In the menu
administration > UI > Actions
a “credit” action is available.

The credit action is available on the action menu of the invoice.

Stupid me… - I think I tried in the wrong area.
Thank you, Cédric!