Today, I received an Error on Journey builder saying "One or more custom activities failed to load. Verify that custom activity endpoints are valid and refresh the Interaction."

It has been running perfectly smooth, and we did not made any change. Any help on how to rectify this error?

  • Having the same problem here. Did this resolve on it's own?
    – Luis
    Mar 22, 2017 at 18:19
  • Kind of, when i did investigation i did not see error in any activity. I mean all the activities were triggering fine, and error automatically disappeared after 24 hours.
    – Sohail
    Mar 23, 2017 at 18:59

1 Answer 1


According to official documentation:

Reason 1: You have started creating a custom activity and have not fully implemented the proper endpoint into its configuration.

In this instance, complete setup of your custom activity and the error will stop appearing.

Reason 2: There is an issue related to the service behind the Journey Builder Salesforce Integration.

If you don't have any custom activities and are receiving this error, please contact Marketing Cloud Customer Support.

Read more: https://help.salesforce.com/articleView?id=000318316&language=en_US&type=1&mode=1

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