I’m just working on the Knowledge Graph final challenge and I made a mistake whilst added the custom field: Job Department. I deleted the field and added again but now the API name automatically adds a ‘1’ to the end. When I remove the ‘1’ and try to the API name as required c_jobDepartment I get an error message:
You actually did everything correctly — great job! The one issue is that you have an extra space after the words Job Department in the name of your Custom Field.