NZ GST return

I import NZ GST return form. But it can’t pick up my GST Zero_rated in this form. I checked the code. But no idea how to locate the id such as

{% assign GST_0 = “1a88fd08-a595-4e12-97d3-85fc165eecdc” %}

I don’t know if the id is correct. How can I find the id?