https://developer.walmart.com/us-marketplace/lang-zh/docs/multi-line-multi-quantity-mlmq-migration-guide
Multi-Line Multi-Quantity (MLMQ) migration guide
Multi-Line Multi-Quantity (MLMQ) is an upgraded order data model that allows a single purchase order (PO) line to contain multiple units of an item, rather...
multi linequantitymigrationguide