Affects Version/s: 11.3
Fix Version/s: 12.0 [Tentative]
2. Add Question
3. Mark question as graded
4. Fill in other fields as necessary
5. Save Question
6. Repeat steps 2-5 and an error should appear that gradebook needs to be added to site.
(The key to replicating this is that it only occurs when adding new questions, not updating them)
In lessons if your adding a question it will not allow you to add more than 1 new questions that are graded. This is because the gradebook id of an new question is "0" at the time the call to the gradebook service is made. Logically you cannot add more than 1 question to particular gradebook with the same id as you'll get a ConflictingExternalIdException.
If the question is new (meaning unsaved) and you select grading then must persist the item in order to obtain an id for the item before calculating the external gradebook id.