Exception: Can not access action 'rate_form', as that name is not a registered action for this domain

Created a formAction and specify that in Domain File under forms tab but its giving this error

Exception: Can not access action ‘rate_form’, as that name is not a registered action for this domain. Available actions are:

Domain file:


  • rate_form

slots: ratings_comments: type: unfeaturized ratings: type: unfeaturized


  • text: “On a scale of 1-5, how much will you rate?”


  • text: “Any comments about the app?”


Rate App

  • rate
    • rate_form
    • form{“name”: “rate_form”}
    • form{“name”: null}


from rasa_core_sdk.events import SlotSet from rasa_core_sdk.forms import FormAction from rasa_core_sdk import Tracker from typing import Dict, Text, Any, List, Union from rasa_core_sdk.executor import CollectingDispatcher

import json

class RatingsForm(FormAction):

def name(self):
   # type: () -> Text
    """Unique identifier of the form"""

    return "rate_form"

def required_slots(tracker: Tracker) -> List[Text]:
    """A list of required slots that the form has to fill"""

    return ["ratings", "ratings_comments"]

def submit(self,
           dispatcher: CollectingDispatcher,
           tracker: Tracker,
           domain: Dict[Text, Any]) -> List[Dict]:
    """Define what the form has to do
        after all required slots are filled"""

    # utter submit template
    dispatcher.utter_template('utter_submit', tracker)
    return []

def slot_mapping(self):
    # type: () -> Dict[Text: Union[Text, Dict, List[Text, Dict]]]
    """A dictionary to map required slots to
    - an extracted entity
    - intent: value pairs
    - a whole message
    or a list of them, where the first match will be picked"""

    return {"ratings": self.from_entity(entity="CARDINAL",
1 Like

hey @salman in your domain file, have you registered your actions ? actions:

  • rate_form

do we have to specify formAction under action and forms tab both in domain file?

Rasa Slot filling documentation says to specify it under forms tab only.

Did you figure out the root cause? I am having the same problem.

I found the solution. You have to implement the validate method in the FormAction. issue