Customer is invalid - When adding customer to cart

Technical Q&A
1

I am trying to connect customer to cart with cartBuyerIdentity mutation, but I am getting this error

{ “field”: [ “buyerIdentity”, “customerAccessToken” ], “message”: “Customer is invalid” }

even through that access token is 100% correct, I also tried manually passing delivery information , it updates the cart, but when I go to checkout address options are still empty. does somebody know how to resolve this?

2

Okay, looks like cart can not be updated with Shopify GraphQL application - I tried sending request from my endpoint and buyer identity has been updated and address is showing up in the checkout!