Marking in Microsoft Dynamics AX, Part 1: Understand the Basics

My first Microsoft Dynamics AX project was in Hamburg Germany, in September 2004. This was a big company that went from SAP to AX. Not an ideal start for a beginning AX consultant, but I learned a lot about SAP while often having to tell the customer "Nein".  A turning point came when the topic of Return Purchase orders came up and I showed them "marking". (Markieren).  "Wunderbar! Das haben wir in SAP nicht!" exclaimed my counterpart. ("Great! We don't have that in SAP"). I never forgot that moment. I have heard similar appreciation for this functionality from many other customers. Yet no comprehensive description of the functionality yet exists.


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About Evert Bos

I am Evert J Bos, ERP consultant since 1986. I started in Europe with IMS7 (A Honeywell Bull Mainframe ERP system) and the BaaN ERP system. Since 1995 I have worked in the USA and since 2004 I have been working with Dynamics AX.  I work for Sikich and focus mostly on manufacturing companies that make complex, engineered products.

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I Just wanted to say "Thank you" for such a beautiful article. Keep rocking

With Thanks,
Prasad GVR

Excellent article

This is the best introduction to Marking that I have ever read.

As you say it has never received the attention it deserves in the standard documentation, yet in many implementations it is critical to the management of the stock reservations and the costing.

I look forward to part 2.


Great post! and thanks for sharing.

Also looking forward to part 2

With Thanks.
PerfXit a AX Performance troubleshooting company


Thank you!

When I try to mark one SO-123 line with PO-123,but there is no line exsits in Marking form. Do you know what is the logic behind that?
I tried another line, it shows PO-abc lines only.

Looking forward to your reply.


Tuo88!! First question: your costing method for the item you are testing with? Hopefully not std cost THen I do not understand your scenario. Marking a sales line with a po line is easy enough. No matter whether you do it from the PO line for from the Sales line. You are saying you clicked the box and hit ok and there is a blank screen still? Don't understand at all what "PO-abc lines" are.