Hello again.
I solved the problem by deleting Flow Action from my branch and create new one in the Object Data Actions tab.
The problem was when I created a new action in the Object Data Actions tab I didn’t save it. So the flow action was created in the branch but not added to the tab, because of Save. I believe it would be a good improvement to allow adding an existing flow action to this tab.
But now I have another problem. I have my Actions created and configured the embedded table to call them, but they don’t appear at runtime.
I don’t know what I’m doing wrong. Any suggestions would be greatly appreciated.