Session between Catalyst & Bundle B2B quote checkout - The user is not authorized

[VishaKsu]

According to Bigcommerce Bundle B2B docs this endpoint https://developer.bigcommerce.com/b2b-edition/apis/rest-management/quote/quotes#generate-cart-and-checkout-url-for-a-quote should be used to proceed to quote checkout.

We are using the GraphQL Storefront API with Customer Access Tokens for authentication https://github.com/bigcommerce/catalyst/releases/tag/%40bigcommerce%2Fcatalyst-core%400.19.0. However, when the user proceeds with Bundle B2B Checkout, the Customer Access Token is not used and user is pushed to guest checkout.

Precondition:
Bigcommerce Bundle B2B is installed.

Steps to reproduce the behavior:

1. Authorize in Catalyst
2. Create a quote https://developer.bigcommerce.com/b2b-edition/apis/rest-management/quote/quotes#create-a-quote
3. Proceed to B2B Quote Checkout using the BundleB2B checkout https://developer.bigcommerce.com/b2b-edition/apis/rest-management/quote/quotes#generate-cart-and-checkout-url-for-a-quote

Actual behaviour:
User is not authorized

Expected behavior:
User is authorized.

Alternatively generate checkout URL using Catalyst API https://developer.bigcommerce.com/docs/storefront/cart-checkout/guide/graphql-storefront#create-a-cart-redirect-url

but in this case cart id from quote doesn't fit new graphql API, graphql returns 'Cart not found'

For normal cart catalyst API returns url like /attach_session with jwt token, perhaps we could have manually generate that token but it's not clear what to use as a secret to sign it. We've stuck trying to figure out this integration

Thanks a lot for your help and support! Let me know if you need more details