OneSignal External User IDs support

  • 16 February 2021
  • 2 replies



 is an identifier you set which helps map your unique database User ID's to the OneSignal 


 device record. This could be any unique identifier like Firebase User ID, CRM User ID, or even email if you choose.

However,  I cannot find the setting to use the external_user_id in OneSignal settings

2 replies

Userlevel 7
Badge +11

Hi @boblin, thanks for your question!

Are you able to share some more information about your Zap so that folks have some more context? What trigger/action are you using and what are you trying to do?

If you’re able to share a screenshot of where you’re seeing the external_user_id in the Zap that would be super helpful (don’t forget to remove/hide and private information from your screenshot). 🙂

Userlevel 7
Badge +8

To add to @Danvers response above, we suggest contacting OneSignal’s support to ensure this is not an issue from their end. If you post a screenshot to let us know where the error you’re experiencing may be, we can confirm where to go from there too!