We need to store a relationship between ERP Order Numbers and Fulfillment Orders. Since Shopify does not allow metafields on Fulfillment Orders, it was recommended to create a mapping in a metafield on the Order object. We can do this, however we do not see a way to search for an Order that has a specific value in the
Hey @jdreste
Welcome to Shopify Community.
The function may not be directly supported by Shopify. However, you could consider utilizing the Shopify Admin API to fulfill your requirements.
Feel free to reach out.