# Action\_session\_start not getting triggered

**URL:** <https://forum.rasa.com/t/action-session-start-not-getting-triggered/37353>\
**Category:** Rasa Open Source\
**Created:** [November 24, 2020, 4:37pm UTC](https://forum.rasa.com/t/action-session-start-not-getting-triggered/37353 "2020-11-24T16:37:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![traube](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/traube/32/11965_2.png) [@traube](https://forum.rasa.com/u/traube)\
**Post date:** [November 24, 2020, 4:37pm UTC](https://forum.rasa.com/t/action-session-start-not-getting-triggered/37353/1 "2020-11-24T16:37:42Z")

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I’m trying to override action\_session\_start to fill some slots on session start. I’ve just copied this example: [ActionSessionStart](https://rasa.com/docs/rasa/default-actions) to my actions.py and just changed the `fetch_slots` method. If I run `rasa run actions --debug` I can see, that this action is registered:

2020-11-24 17:19:19 INFO rasa\_sdk.executor - Registered function for ‘action\_session\_start’.

But neither on my first message, nor on manually triggering `/start_session` the action is getting triggered.

It does work with other actions. Do I need to change something else, or should overriding the action be enough?

Thanks

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**Author:** ![Tobias\_Wochinger](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/tobias_wochinger/32/4580_2.png) [@Tobias\_Wochinger](https://forum.rasa.com/u/Tobias_Wochinger)\
**Post date:** [December 17, 2020, 9:36am UTC](https://forum.rasa.com/t/action-session-start-not-getting-triggered/37353/2 "2020-12-17T09:36:37Z")

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Did you also add the action `action_session_start` to our domain?

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**Author:** ![endreb](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/endreb/32/12584_2.png) [@endreb](https://forum.rasa.com/u/endreb)\
**Post date:** [April 25, 2021, 4:20am UTC](https://forum.rasa.com/t/action-session-start-not-getting-triggered/37353/3 "2021-04-25T04:20:51Z")

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thanks. I had the same issue and adding action\_session\_start to domain solved the problem.