Infor LN MRP Planning Setup and Parameter Configuration
Material Requirements Planning in Infor LN calculates net material demand by exploding BOMs against forecasted and actual demand, netting existing inventory and open orders. Session cprpd1100m (MRP Run) executes the planning engine, while item-level planning parameters in cprpd0100m control order policies, lot sizing, and safety stock behavior. Properly tuned MRP parameters reduce excess inventory, prevent stockouts, and shorten manufacturing lead times.
MRP Planning Parameters and Order Policies
Infor LN MRP planning behavior is controlled at the item-warehouse level through session cprpd0100m. Key parameters include order policy (lot-for-lot, fixed order quantity, EOQ, period of supply), planning horizon, order modifiers (minimum, maximum, multiple), and safety stock calculation methods. These settings determine how MRP translates net demand into planned purchase and production orders.
- Configure order policies in cprpd0100m: lot-for-lot for A-items, period-of-supply for B-items, fixed quantity for C-items
- Set planning horizons and frozen zones to prevent MRP from rescheduling orders within the manufacturing execution window
- Define order modifiers including minimum order quantity, maximum order quantity, and order multiple for each item-warehouse
- Configure safety stock methods: fixed quantity, days of supply, or dynamic calculation based on demand variability and lead time uncertainty
- Set up planning groups in cprpd0150m to apply consistent planning parameters across related item families efficiently
Demand Sources and Pegging
Infor LN MRP recognizes demand from multiple sources: sales orders, forecasts, dependent demand from BOM explosion, project requirements, and intercompany demand. Session cprpd1200m provides demand pegging visibility, tracing each planned order back to its originating demand source. Proper demand source prioritization and consumption logic ensures that forecasts are consumed by actual orders without creating duplicate supply.
- Configure demand source priorities to control how sales orders consume forecasts using forecast consumption rules in cpfcs0100m
- Set up inter-site demand to include transfer orders and intercompany requirements in the MRP net demand calculation
- Enable full pegging in cprpd1200m to trace every planned order to its demand source for root cause analysis of supply actions
- Define planning BOM percentages for items with multiple variant BOMs to plan aggregate demand across product family options
MRP Execution and Exception Management
MRP execution in Infor LN generates planned orders and exception messages through session cprpd1100m. Exception messages flag items requiring planner attention: reschedule-in, reschedule-out, cancel, and expedite recommendations. Effective MRP management requires planners to focus on critical exceptions while allowing the system to auto-firm routine planned orders within defined parameters.
- Execute regenerative or net-change MRP runs via cprpd1100m with configurable scope by item group, warehouse, or planner code
- Configure automatic planned order firming rules to convert routine planned orders to production or purchase orders without manual intervention
- Set up exception message filtering and prioritization to focus planner attention on high-value and high-risk supply actions
Tune your MRP parameters for optimal performance—request an Infor LN planning assessment from Netray.
Related Resources
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