What is SIS ID's in Canvas Lms
<p>I don't understood the sis id concept in canvas. there are multiple sis types of <code>sis id's</code> in canvas e.x: <code>sis_course_id</code>,<code>sis_user_id</code>.</p>

<p>A very small explanation I found which i don't understood is this: </p>

<blockquote>
  <p>"Throughout the API, objects are referenced by internal IDs. You can
  also reference objects by SIS ID, by prepending the SIS ID with the
  name of the SIS field, like sis_course_id:. For instance, to retrieve
  the list of assignments for a course with SIS ID of A1234:"</p>
</blockquote>