Adding multiple users for same group in Camunda - authorization

Question

In Camunda, I am trying to add Users to Authorization Object.
I am adding authorization object (user and groups) AuthorizationService as below:
for (Resource resource : Resources.values()) {
AuthorizationEntity authorizationObject = new AuthorizationEntity(AUTH_TYPE_GRANT);
authorizationObject.setGroupId(group);
authorizationObject.setResource(resource);
authorizationObject.setResourceId(ANY);
authorizationObject.addPermission(ALL);
authorizationService.saveAuthorization(authorizationObject);
}
I am getting the following error if I add the same userId for already added groupIds:
ORA-00001: unique constraint (ACT_UNIQ_AUTH_GROUP) violated exception` :
ENGINE-03004 Exception while executing Database Operation 'INSERT AuthorizationEntity[90f11610-07c6-11eb-8aeb-025041000001]' with message '\r\n### Error flus

Answer 1

Suggest to use the API as described in the JavaDoc:
https://docs.camunda.org/javadoc/camunda-bpm-platform/7.14/
Authorization auth = authorizationService.createNewAuthorization();
//... configure auth
authorizationService.saveAuthorization(auth);
The authorization object can be configured either for a user or a
group:
auth.setUserId("john"); -OR- auth.setGroupId("management");
and a resource:
auth.setResource("processDefinition"); auth.setResourceId("2313");
finally the permissions to access that resource can be assigned:
auth.addPermission(Permissions.READ);
and the authorization object is saved:
authorizationService.saveAuthorization(auth);
As a result, the given user or group will have permission to READ the
referenced process definition.