Hello. This is an inquiry related to Rest API. Shopify object Common id values are seen as descending into numeric types. As an exception, the id value of ShippingLine is confirmed as a string type value.
Is it because it is an id value of a third-party service? Isn't this part internally created and managed by shopify? Is there any object with id value as string other than ShippingLine?
The type description of GraphQL explains that the id value can be a string or a Number value, but in reality, only the id value of ShippingLine appears to be passed as a string.