The Integration Engineer
When it just has to work.

ACK is an Acknowledgment segment. It is commonly found on response transactions to Purchase Orders or 855. It is one of the lines found in the PO1 loop or group.  As this line modifies the PO1 line data from the Purchase Order, what it can contain and how that data is handled is important for the stability of the supply chain integration.  For clarity, we are going to use the 4010 x12 standard.

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What is a line item?

A line item is a group of data and its structure that is or can be repeated multiple times in its document.  It holds the data that is the focus of the document, and a part of a document or transaction that contains distinct part that can stand alone.  For instance, an order that has two line items could be split into two orders that would be able to be filled separately.  It does not necessarily contain information that can be applied to a group of items, although sometimes this information is included.  This feeds into what type of data that a line item contains.

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