Hi @akwankl ,
Unfortunality deleting the dataset is only feasible option in this case. For your use case you might want to follow below steps.
1- Create a New Dataset and define a new schema with the correct secondary identity.
2- Duplicate the AJO Action:
- Duplicate the existing action that writes back to the dataset.
- Configure the new action to write to the new dataset.
3- Update Journeys with the New Action: Carefully update the journeys to use the new action. If possible, do this during low-traffic periods.
Hope this helps or let us know if you find any other feasible solution for this use case.