If you:

  • Use powershell to utilize the Akamai API, and;

  • Use dynamic caching, and;

  • Have a Cache-Id modification set, which;

  • Uses “include cookie”, and;

  • Your property rule for that cache-id is more then 3 children deep

You will find your cache-id cookie value is malformed. You can check this by viewing the XML of your rule.

To fix: Move the rules up so they are NOT more then 3 deep.

Below is a screenshot from the GUI, with the underlying XML. Notice how the XML is malformed? This will break all of your cache rules.