Sent by suppliers or authorized agents to buyers, this transaction set acknowledges receipt of a price authorization request and communicates the current status of pricing agreements. Typically transmitted in response to a price authorization inquiry, it contains structured information about contract terms, pricing adjustments, and associated conditions. The BPA (Beginning Segment for Price Authorization Acknowledgment/Status) establishes the acknowledgment transaction, while the CON (Contract Number Detail) segment identifies specific contracts being addressed, and the DTM (Date/Time Reference) segments mark critical dates such as effective periods and authorization deadlines.

For example, when Acme Manufacturing requests updated pricing for industrial fasteners from Premier Supplies, Premier responds with an 845 transaction set. The message confirms receipt of the request through the BPA segment, identifies the relevant contract through CON segments, and—if pricing has changed—provides adjustment details through PAD (Product Adjustment Detail) loops that specify quantity thresholds, new unit prices, and effective dates. Supporting segments such as CTB (Restrictions/Conditions) clarify any volume minimums or territorial limitations, and CTP (Pricing Information) loops detail the tiered pricing structure so Acme’s procurement system can immediately update its pricing tables for purchase orders.