Shopify Error Code in Fulfillment: 422, Error Message: '{"errors":{"base":["Line item \'XXXX\' is already fulfilled"]}}'

Data Flow: NetSuite Fulfillment to Shopify Fulfillment Add

Error Code: 422

Error Message: '{"errors":{"base":["Line item \'XXXX\' is already fulfilled"]}}'

Reason: Occurs when the Order is already fulfilled in Shopify.

Resolution: Go to Shopify and verify whether the Order is fulfilled or not.