Title: Customer.paymentMethods returns empty array for a customer who has payment method attached to an order

GraphQL Admin API Troubleshooting
1

Hey everyone :waving_hand:

I’m running into a strange issue with the Shopify Admin GraphQL API.

This query returns an empty paymentMethods array for a specific customer:

query {
  customer(id: "gid://shopify/Customer/[REDACTED]") {
    id
    paymentMethods(first: 50) {
      nodes {
        id
      }
    }
  }
}

The response looks like this:

{
    "id": "gid://shopify/Customer/[REDACTED]",
    "paymentMethods": [],
}

However, this customer has already placed an order, and I can clearly see a saved payment method associated with that order in the Shopify admin UI.

:white_check_mark: The same query works fine for other customers - their payment methods are returned correctly.

:cross_mark: Only this particular customer’s paymentMethods array is empty.

I’ve reviewed the docs here: Customer - GraphQL Admin

So far, I haven’t found anything suggesting why this might happen.

Has anyone experienced something similar?

Is there any condition under which a customer’s payment method wouldn’t appear in the API response (e.g. order type, payment gateway)?

Thanks in advance for any insights! :folded_hands: