There are different ways to find out the GUID of the SharePoint list here I am showing the simplest one.

  1. First go to your SharePoint list then select List Settings
  2. From the url copy all the things after “?List=”
  3. Change “%7B” to “{”
  4. Change all “%2D” to “-“
  5. Change “%7D” to “}”
  6. Now you get the GUID of the LIST