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SAP MD04 Exception Messages and MRP Elements Reference

MD04 is where every SAP planner lives. Each line is an MRP element with its own abbreviation, and the exception messages tell you what MRP thinks needs action. This reference explains the common abbreviations, the exceptions 10, 15, 20 and 96, and the transactions to use next.

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Code	Kind	Meaning	What to do
10	Exception	Reschedule in	Receipt is scheduled later than needed. Ask supplier or shop to pull in, or accept the shortage.
15	Exception	Reschedule out	Receipt arrives earlier than needed. Push out to reduce stock holding, if cost and schedule allow.
20	Exception	Cancel process	No requirement covers the receipt. Cancel the order, PO line or requisition, after checking for hidden demand.
96	Exception	Stock falls below safety stock	Review supply, safety stock value and whether demand changed.
PldOrd	MD04 element	Planned order	Created by MRP. Convert to a production order or purchase requisition.
PrdOrd	MD04 element	Production order	Receipt element. Check release status and dates.
PurReq	MD04 element	Purchase requisition	Convert to a PO through purchasing, or delete if not needed.
POitem	MD04 element	Purchase order item	Confirmed external receipt. Check delivery date against need.
SchAgrRel	MD04 element	Scheduling agreement release	Delivery schedule line from a scheduling agreement.
Reserv.	MD04 element	Reservation	Manual or maintenance reservation that consumes stock.
DepReq	MD04 element	Dependent requirement	Component demand from planned or production orders. Trace it to the parent.
IndReq	MD04 element	Independent requirement	Planned independent demand from a demand program.
CusOrd	MD04 element	Customer order (sales order)	Sales order schedule line demand. Check delivery dates and confirmed quantities.
OrdRes	MD04 element	Order reservation	Component reservation on a production or maintenance order.
Stock	MD04 element	Plant stock at the start of the list	Unrestricted use stock available for planning.
SafeSt	MD04 element	Safety stock	Shown as a requirement or as a level. Maintained in the material master.
MD04	Transaction	Stock/requirements list for one material	The main view. Shows the dynamic list with receipts, issues and exceptions.
MD05	Transaction	MRP list for one material	Static result of the last MRP run, not live.
MD06	Transaction	Collective display of MRP lists	Use for a controller or plant wide list of materials.
MD07	Transaction	Collective display of stock/requirements lists	Dynamic collective view across materials.
MD01	Transaction	MRP run for the plant	Total planning run. Often scheduled as a background job.
MD02	Transaction	MRP run for a single material with BOM levels	Use for multi level planning of one material.
MD03	Transaction	MRP run for a single level, single material	Use for a one material test or re-run.
MD11	Transaction	Create planned order	Manual planned order creation.
MD12	Transaction	Change planned order	Firm, change quantity or dates.
MD16	Transaction	Collective display of planned orders	List planned orders and delete or convert in one pass.
MD20	Transaction	Create planning file entry	Force a material to be included in the next MRP run.
MRP area	Concept	Unit for planning inside a plant such as a storage location or subcontractor	If used, MD04 can be viewed per MRP area.

Exception messages beyond these four exist and are defined in Customizing as exception groups. Use MD06 to see which ones your system raises.

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How to use the reference

Open MD04 for a material and look at the element column. Search here for the abbreviation, such as PldOrd or DepReq, to confirm what it is and what action it implies. Use the transaction rows to decide whether you need MD04, MD05 or the collective lists. Export the table to Excel to give new planners a cheat sheet or to add your own local notes.

Search by abbreviation or by exception number
Read the What to do column before changing anything
Export for onboarding new planners

How MRP creates exception messages

After the planning run, MRP compares receipts with requirements by date. If a receipt is later than the requirement, it flags reschedule in (10). If it is earlier than needed, it flags reschedule out (15). If a receipt has no requirement, it flags cancel (20). Safety stock violations raise 96. Reschedule proposals are limited by rescheduling horizons set in MRP configuration, so a missing message does not always mean everything is on time.

MD04 versus MD05 versus MD07

MD04 is the live stock and requirements list for a material and reflects changes made after the last run. MD05 shows the MRP list as it was when the run finished. MD06 and MD07 are collective displays for many materials, using MRP lists and stock requirements lists. Planners use MD07 to find what needs attention and MD04 to fix it.

Common mistakes

Acting on MD05 data after the situation changed gives wrong answers. Cancelling because of a 20 message without checking forecast or planning time fence demand leads to shortages later. Ignoring 96 messages for months usually means safety stock is out of date.

Prefer MD04 for decisions, MD05 for audit
Check time fences before cancelling
Review safety stock values when 96 repeats

Frequently Asked Questions

What does exception message 10 mean in SAP?

Exception 10 is reschedule in. A receipt such as a purchase order or production order is dated later than the requirement it covers, so MRP proposes bringing it forward. Whether you can depends on the supplier or shop floor.

What is the difference between MD04 and MD05?

MD04 is the dynamic stock and requirements list and shows current data. MD05 is the MRP list from the last planning run and does not change until MRP runs again. Use MD04 for daily decisions.

Why do I see cancel process (20) on a valid order?

MRP found no requirement for the receipt in the horizon it looked at. Demand may be outside the planning time fence, in another MRP area or not yet entered. Check before cancelling.

Can I customize exception messages?

Yes. Exception groups and the messages active for a material are controlled in Customizing and via the MRP group and material master settings. Use MD06 to confirm what your system raises.

If you want exceptions explained in plain English with the supply chain behind them, we can put a read only assistant over your SAP planning data that shows its query and respects your roles.

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