# Price Book Session in Infor LN: Setup and Order Pricing > Source: https://netray.co/erp-help/price-book-session-infor-ln-sales-pricing > Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems. > Section: ERP Help ## Short answer In Infor LN, a price book holds the selling prices for items, and LN selects the price for a sales order line by looking up the applicable price book through its pricing setup. If a sales line shows no price or the wrong one, check price book validity dates, the item and unit, the customer's assigned price structure and currency. Session names vary by version, so search the session list for price book. ## Kind how-to ## System infor-ln ## Erp Infor LN ## Module Sales Control / Pricing ## Query price book session infor ln ## Alternate Queries - infor ln price book - infor ln sales price book setup - infor ln price list vs price book - infor ln sales order price not found ## Applies To Infor LN 10.x Sales Control. Terms such as price book, price list and price structure differ in detail between versions; confirm against your documentation. ## Steps ### Set up a price book and make orders use it **Items:** - Decide the pricing model: one price book per customer group, per currency or per sales channel. - Create the price book with a clear code, currency and validity dates. - Add price lines per item, unit and quantity break, and set the price unit carefully. - Link the price book into the pricing structure so it is found for the right customers or order types. - Assign the customer's pricing data so the book is selected when an order is entered for them. - Create a test sales order and confirm the price retrieved, its source and any discount applied. - Review the pricing for expired or overlapping periods and agree a process for yearly price updates. ## Sections ### How LN finds a price **Body:** When a sales order line is entered, LN searches the pricing setup in a defined sequence, trying the most specific source first and falling back to more general ones. A price book is one source in that sequence. If a more specific match exists, such as a customer-item price, it may win over your book. That is why 'the price book says X but the order says Y' is common. The order is simply using a different source that ranked higher. The order line or its pricing details should show which source supplied the price. ### Why a price is not found **Body:** The usual causes are an item missing from the book, a unit or currency mismatch, validity dates that do not cover the order date, a quantity break that excludes the ordered quantity, or a customer without the pricing link that points to the book. Check them in that order, starting with the date, because annual price changes leave gaps between periods more often than anything else. ### Maintaining prices at scale **Body:** Update prices by loading new validity periods rather than editing old lines, so history is preserved and old orders stay explainable. For large changes, use a staged load with a review step, and test the result on a sample of customers. Document which price source wins in each scenario. New staff and auditors both benefit from a one-page precedence note. **Code:** Price-not-found checklist 1. Order date within validity? 2. Item present in the price book? 3. Unit and price unit match? 4. Currency matches the order? 5. Quantity falls in a price break? 6. Customer pricing data points to the book? ## Pitfalls - Editing existing price lines instead of adding a new validity period, losing price history. - Gaps between validity periods that leave orders without a price on the changeover day. - Mixing currencies in a book meant for one currency. - Not documenting which source wins, so people argue about the 'right' price. - Loading price changes straight to production without a sample test. ## Ai Angle Price disputes need the answer to 'where did this price come from'. A private assistant over your LN sales data can trace an order line to its price source and flag expired or overlapping price periods, read-only and on your own servers. Price changes still go through your pricing owner and a controlled load. ## Faq ### What is a price book in Infor LN? **Answer:** It is a master record holding selling prices for items, with currency, validity dates and optional quantity breaks. LN consults it, through the pricing setup, when pricing sales order lines. ### Why does my LN sales order show no price? **Answer:** Check the order date against validity, that the item exists in the applicable book, unit and currency match, the quantity falls in a break and the customer is linked to the book through pricing data. ### What is the difference between a price book and a price list? **Answer:** Terms and structures differ by version and configuration, but broadly both hold prices that feed order pricing, with different levels of structure. Confirm how your LN version relates them in its Sales Control pricing documentation. ### How should I update prices each year? **Answer:** Add a new validity period rather than changing existing lines, check there is no gap or overlap, and test sample orders for key customers. Keep old periods so past orders remain explainable. ## Search terms infor ln price book, infor ln sales pricing, infor ln price list, infor ln price not found, infor ln sales order price, ln pricing structure, infor ln quantity break price, baan sales pricing --- Talk to an engineer: https://netray.co/contact?intent=erp_ai | Machine catalog: https://netray.co/agent/catalog.json