The new Payment App launched by Shopify 2022 does not allow additional data to be stored in the payment data. This means that reference number that were previously used to connect a payment with an order is not stored anymore in Shopify's payment data. The only data available is Shopify payment identifier (payment_id).
In order to be able to connect Shopify's payment id with the refenrence number and /or payment id in Svea system we have published an interface which allows the e-commerce to use Shopify payment_id to query corresponding reference number of the payment and or Svea payment_id.
The API is available at https://europe-west2-svea-payments.cloudfunctions.net
...