Cannot Add Users to Role through Vault API.
The Owner and Coordinator Roles are handled differently than other Roles when using the Vault API. These roles can hold a User and not a Group. Users must be added to a different Role and then promoted to either Owner or Coordinator.
The API functionality for adding Users to the Owner or Coordinator Role is similar to the User Interface (UI) functionality. To add a user to the Owner or Coordinator role:
- Add a user to a different Role.
- Create a separate Call to change this user to an Owner or Coordinator.