If you’re creating a configurable form for an assessment, you must include the Assessment Context element, which will add fields for the assessment’s dimensions onto the form. If this element is not added to the form, you will not be able to successfully create a new assessment object.
This element is not available to forms for non-assessment object types.
The Assessment Context element on a form. This element adds the assessment's dimensions to the form, which are required when creating a new assessment instance.