Abstract: Various embodiments of a system and method for an order handling data model with item-level granularity are described. Embodiments may include an order handling system configured to, for a given purchase order received from an ordering entity, generate within a data store a purchase order data object, item data objects for items of the purchase order, and message data objects for messages associated with item data objects. In various embodiments, the order handling system may also generate in the data store mapping information for mapping each of the different data objects for a given purchase order together. The order handling system may also provide to the ordering entity a notification for a particular item. The notification may be based on information accessed from the item data object corresponding to the particular item or information accessed from other data objects associated with that item data object according to the mapping information.

Abstract: Various embodiments of a system and method for order processing state management are described. Embodiments may include an order handling system that includes multiple processing components for performing a respective portion of an order fulfillment process for purchase orders. The order handling system may also include a data store for storing state information of the purchase orders. To process a given purchase order, the order handling system may utilize each processing component to complete a respective portion of the order fulfillment process for that purchase order. The order handling system may also utilize each component to, based on the respective task performed, update state information corresponding to the aforesaid purchase order in the data store. The order handling system may, subsequent to an interruption of the processing of the purchase order, resume the processing of the purchase order based on the updated state information.