
A scheduled receipt is an open purchase order or work order that MRP expects to deliver inventory on a specific date. Scheduled receipts represent committed supply — orders that have been released to suppliers or the shop floor and are in progress. In the net requirements calculation, scheduled receipts reduce the quantity that needs to be ordered.
At User Solutions we emphasize that scheduled receipt accuracy is just as important as inventory accuracy. If MRP thinks 500 units are arriving next week but the supplier has not even started production, the plan is built on a false assumption.
How Scheduled Receipts Work
When a planned order is released (converted to a live PO or work order), it transitions from a planned receipt to a scheduled receipt in MRP. The key differences:
| Attribute | Planned Order | Scheduled Receipt |
|---|---|---|
| Status | System recommendation | Committed / in progress |
| MRP control | Can change freely | Cannot change automatically |
| Inventory impact | Future projection | Expected arrival |
| Planner action | Review and release | Monitor and manage |
Scheduled Receipts in the MRP Grid
In a standard MRP planning grid, scheduled receipts appear as incoming supply in the period they are expected:
| Week 5 | Week 6 | Week 7 | Week 8 | |
|---|---|---|---|---|
| Gross Requirements | 100 | 80 | 120 | 90 |
| Scheduled Receipts | 0 | 150 | 0 | 0 |
| On-Hand (projected) | 50 | 120 | 0 | -90 |
The scheduled receipt of 150 in Week 6 is a committed order — perhaps a PO placed three weeks ago. MRP counts on this supply and does not generate additional orders for Week 6. But Week 8 shows a projected shortage, so MRP will create a planned order.
Scheduled Receipt Example
A manufacturer has released three purchase orders for aluminum castings:
| PO Number | Qty | Expected Arrival | Supplier |
|---|---|---|---|
| PO-8801 | 200 | Week 10 | Foundry A |
| PO-8815 | 150 | Week 12 | Foundry A |
| PO-8822 | 300 | Week 14 | Foundry B |
These are scheduled receipts in MRP. When MRP calculates net requirements for aluminum castings, it subtracts these 650 units from gross requirements across Weeks 10-14.
On Thursday, Foundry A notifies the buyer that PO-8801 will ship one week late — arrival in Week 11 instead of Week 10. The buyer updates the expected date in the ERP system.
When net change MRP runs Friday morning, it recalculates:
- Week 10: Gross requirements of 180, no scheduled receipt → net requirement of 180 (previously covered by PO-8801)
- MRP generates an action message: "Expedite PO-8801 or source 180 units from alternate supplier"
The planner contacts Foundry B about an emergency shipment of 180 units, preventing a production line shutdown.
Why Scheduled Receipts Matter for Scheduling
They represent real supply commitments. Unlike planned orders (which are suggestions), scheduled receipts are expected inventory. The production schedule depends on them arriving as planned.
Inaccurate dates cascade through the plan. If a scheduled receipt date is wrong, MRP's entire downstream calculation for that component and its parents is wrong. This is a leading cause of "MRP says we are fine but the shop floor is short."
They connect purchasing to production. Scheduling tools like Resource Manager DB use scheduled receipt dates as material availability constraints. A job cannot be scheduled before its materials arrive, and those arrival dates come from scheduled receipts.
Monitoring is essential. Planners should review open scheduled receipts daily, confirming expected dates with suppliers and updating the system immediately when changes occur.
Related Terms
- Net Requirements — The calculation that subtracts scheduled receipts from gross requirements to determine what still needs to be ordered.
- Planned Order — The MRP recommendation that becomes a scheduled receipt once released.
- Purchase Order — The most common source of scheduled receipts for purchased materials.
FAQ
A scheduled receipt is an open, committed order — a released purchase order or work order with materials allocated and execution underway. A planned order is an MRP recommendation that has not yet been released. MRP can change or delete planned orders freely but will not modify scheduled receipts — only generate action messages suggesting changes.
If a scheduled receipt will arrive later than planned, the planner must update the expected date in the system. MRP will then recalculate net requirements and may generate new planned orders to cover the gap, or issue expedite messages for other orders. Failing to update late receipts leads to phantom inventory and stockouts.
MRP will not automatically reschedule a scheduled receipt because it represents a real commitment (a PO to a supplier or a WO on the shop floor). Instead, MRP generates reschedule action messages — "expedite," "defer," or "cancel" — and the planner decides whether to act on them.
This term is part of the Manufacturing Glossary. For a deep dive into material planning, see our MRP Guide.
Frequently Asked Questions
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User Solutions has been developing production planning and scheduling software for manufacturers since 1991. Our team combines 35+ years of manufacturing software expertise with deep industry knowledge to help factories optimize their operations.
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