Infor M3 Supply Chain Planning: Settings That Actually Matter
Supply chain planning in Infor M3 is driven almost entirely by the item-warehouse record, where the acquisition code, planning method, ordering policy, lead times, and safety stock determine what the planning run proposes. The engine nets demand against supply, generates planned orders, and produces exception messages telling planners what to expedite, defer, or cancel. Planning quality in M3 is rarely a software problem. It is a parameter problem: a few hundred item-warehouse records with lead times and safety stock nobody has revisited since go-live, generating noise planners have learned to ignore.
Acquisition Code, Planning Method, and Ordering Policy
The acquisition code tells M3 whether an item in a given warehouse is manufactured, purchased, or supplied by another warehouse through distribution. That single field determines which kind of planned order the engine proposes and therefore which team owns the exception. Planning method decides whether the item is planned by requirement netting, by reorder point, or by period, and ordering policy determines the quantity: lot for lot, fixed quantity, or a period coverage rule. These four fields interact, and setting them item by item based on demand pattern and value, rather than copying a template across the catalog, is the highest-return planning work available in M3.
- Use requirement-based planning for dependent demand and reorder point only for low-value, stable consumption
- Set ordering policy from real demand variability, not from the supplier minimum order quantity alone
- Review acquisition codes whenever a part changes source between make, buy, and inter-warehouse supply
- Segment the catalog by value and volatility, then apply parameter policies per segment rather than globally
Lead Times, Safety Stock, and Planning Horizon
Lead time in M3 is not one number. Purchase lead time, manufacturing lead time, goods receipt inspection time, and internal transport time each add to when material is actually available, and understating any of them guarantees chronic expediting. Safety stock and safety lead time both buffer uncertainty but do so differently: quantity buffers demand variability, time buffers supply variability. Most catalogs need both, applied selectively. Set the planning horizon long enough to cover the longest cumulative lead time in the structure, otherwise the engine cannot see far enough ahead to propose long-lead components in time, and planners experience it as the system failing rather than as a setting.
- Recalculate purchase lead times from actual receipt performance at least twice a year
- Use safety lead time for supply reliability problems and safety stock for demand variability
- Extend the planning horizon past the cumulative lead time of your deepest product structure
- Include inspection and put-away time in lead time for regulated or aerospace parts
The Planning Run, Planned Orders, and Exception Messages
M3 planning can run as a full regeneration or as a net change that processes only what moved since the last run. Most operations schedule a net change nightly and a full regeneration weekly, because net change is dramatically faster but can drift. The output is planned orders and a set of exception messages against the material plan. Planners then convert planned orders into manufacturing, purchase, or distribution orders. Success depends on message volume: if the daily list runs to thousands, planners will triage by habit rather than by priority. Tuning parameters until the exception list is genuinely actionable is the whole objective.
Multi-Warehouse Supply and Advanced Planning Tools
For distribution networks, M3 plans inter-warehouse supply through distribution orders, with each receiving warehouse pointing to its supplying warehouse in the item-warehouse setup. This lets central stock feed regional locations under the same planning logic as purchasing. When constraints go beyond what netting can handle, such as finite capacity, multi-plant allocation, or statistical demand planning across thousands of items, Infor's supply chain planning and demand planning applications integrate with M3 and return their results as planned supply. The decision point is usually complexity of constraints, not company size: a single plant with severe capacity contention may need more than a distribution network with none.
How Netray AI Agents Tune M3 Planning Parameters
Netray agents analyze historical demand, actual supplier performance, and exception message history to recommend item-level lead time, safety stock, and ordering policy changes, with the expected inventory and service impact quantified per item. Customers commonly see exception message volume drop by half within two planning cycles because the noise came from a limited set of misconfigured records. A monitoring agent then watches for parameter drift, new items created with default values, and suppliers whose delivery performance has degraded enough to warrant a lead time change, and pushes those to planners rather than waiting for an annual review that never quite happens.
Frequently Asked Questions
What is the acquisition code in Infor M3?
The acquisition code on the item-warehouse record tells M3 how an item is supplied in that warehouse: manufactured internally, purchased from a supplier, or transferred from another warehouse through a distribution order. It determines what type of planned order the planning run creates and therefore which team receives the exception message. Changing an item's source between make, buy, and inter-warehouse supply requires updating this field, or planning will keep proposing the wrong order type.
Should I run net change or full regeneration MRP in M3?
Most operations run net change nightly and a full regeneration weekly. Net change processes only items affected by changes since the previous run, so it completes far faster and suits daily planning cycles. Full regeneration recalculates everything and corrects any drift that accumulates in net change processing, particularly after parameter updates or master data corrections. Schedule the regeneration in a window that does not overlap with peak order entry or allocation activity.
How do I reduce MRP exception messages in Infor M3?
Excessive exception messages almost always trace to a limited set of item-warehouse records with unrealistic lead times, safety stock set arbitrarily at go-live, or an ordering policy mismatched to the demand pattern. Recalculate lead times from actual receipt performance, differentiate safety stock from safety lead time based on whether the uncertainty is demand or supply, and segment the catalog so parameters reflect value and volatility. Tuning a few hundred records usually removes most of the noise.
Key Takeaways
- 1Acquisition Code, Planning Method, and Ordering Policy: The acquisition code tells M3 whether an item in a given warehouse is manufactured, purchased, or supplied by another warehouse through distribution. That single field determines which kind of planned order the engine proposes and therefore which team owns the exception.
- 2Lead Times, Safety Stock, and Planning Horizon: Lead time in M3 is not one number. Purchase lead time, manufacturing lead time, goods receipt inspection time, and internal transport time each add to when material is actually available, and understating any of them guarantees chronic expediting.
- 3The Planning Run, Planned Orders, and Exception Messages: M3 planning can run as a full regeneration or as a net change that processes only what moved since the last run. Most operations schedule a net change nightly and a full regeneration weekly, because net change is dramatically faster but can drift.
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If your M3 planners ignore the exception list because it is too long to read, Netray can tune your planning parameters with evidence from your own transaction history.
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