Marking

Marking is a semi-permanent link between a specific demand transaction and a specific supply transaction for the same item in a manufacturing inventory system. It controls fulfillment traceability and cost assignment, can be applied before or after posting, and can force inventory close to use the marked receipt's cost instead of FIFO or LIFO. Unlike pegging, marking persists until manually removed; unlike reservation, it ties demand to a specific receipt and its cost.

On a manufacturing floor, marking is used when a sales order, production order, or BOM issue must tie to a specific purchase receipt, transfer receipt, or production receipt so the consuming transaction uses the intended lot and cost. This is critical when material arrives in multiple purchase lots at different prices, when customer-specific traceability is required, or when a production order must consume a designated incoming batch before it is physically put away. In Dynamics 365 firming, marking can be applied automatically from pegging using options such as No, Standard, Extended, Single level standard, or Single level extended. Marking helps planners and warehouse teams preserve a specific supply-to-demand relationship through order changes, reduce ambiguity in lot allocation, and ensure inventory close posts the intended receipt cost. In raw-material tracking, it maintains a direct chain from supplier receipt to production consumption, supporting lot-level auditability and preventing unintended cost blending across receipts.

• ⚠️Unintended cost distortion: Planners rely on reservation alone or skip marking after a last-minute procurement change, so inventory close values the issue against a different receipt than the one physically consumed, distorting COGS and variance reporting in actual-cost processes.
• ⚠️Blocked flexibility from over-marking: Over-marking locks demand to supply so tightly that late quantity changes orphan links and require manual rework. Planners cannot rebalance receipts across urgent orders because marked supply stays dedicated even when surplus could serve another demand.
• ⚠️Inconsistent warehouse execution: Physical lot diverges from the ERP-marked lot when receiving and issuing teams ignore the marked path. Inventory close then corrects cost to the marked receipt, creating misleading stock accuracy and audit exceptions.