"The inventory unit and/or item ratios cannot be changed, because the item is in use." Why do you receive this message and what can you do to resolve it?

"Manned operations cannot run simultaneously." Why do you get this message and what can you do to resolve it?

"ACM lines cannot be backflushed." Why do you receive this message and what can you do to resolve it?

"Purchase order '%1' has not been changed since the last created purchase order. No new purchase order is being created." Why do you receive this message and what can you do to resolve it?

"'%1' already exists." Why do you receive this message and what can you do to resolve it?

"Cannot issue more on batch '%1' than is physically available." Why are you receiving this message, and what can you do to resolve it?

Op 6 mei 2026 voeren we een verbetering door voor de beveiliging en betrouwbaarheid van API-koppelingen binnen MKG ERP. Het is belangrijk dat je een add-on-sleutel aan je API-keys koppelt, anders werken je API-koppelingen na 6 mei niet meer. In dit artikel lees je waarom dit nodig is en hoe je dit doet.

"For operation '%1', an order must always be entered." Why do you get this message and what can you do to resolve it?

This article describes the steps and requirements for activating a Microsoft® Graph Mail integration in MKG. This integration enables sending email messages directly via Microsoft Graph Mail from MKG, and also supports the latest Microsoft Outlook version.

This article contains the requirements to set up a Microsoft® Graph Mail integration with MKG, such as user-level licenses and access to Microsoft® Entra and MKG. In this article, you will find the step-by-step plan for creating an Entra app registration for setting up the Graph Mail integration.

"Invalid unit '%1'. No ratio is known for the unit." Why do you get this message and what can you do to resolve it?

"Inventory must be replenished at least to the minimum inventory level." Why do you receive this message and what can you do to resolve it?

It is possible to individually specify per warehouse location whether receipt, reservation, or issue is allowed, so that inventory can be securely locked without blocking the entire warehouse. This article describes how to block warehouse locations for certain actions.

MKG works with Microsoft SharePoint. In this article, we explain what the SharePoint integration is and how you can use it in your MKG ERP environment.

Does your customer send call-off orders for which you do not immediately know how many and by when they will be taken? In this article, you will learn how to register these types of orders in MKG without losing track.

Here you will find an overview of all articles addressing the SharePoint integration in MKG, sorted by topic.

In the 'General' tab, you can add and set a number of fields that apply to the entire delivery note.

As a production planner, you want to be able to build and manage a complete forecast structure from a sales or production order. After all, you want insight into purchasing needs, planning load, and lead times. Forecast explosions can be automatically generated. This article explains how it works.

In this overview, you will find the button icons and fields of the sales delivery note lines with a brief explanation. When you hover over a button in the MKG software, the name of the button will also appear.

01-12-2025 | As a customer of MKG, you are likely accustomed to us using Teamviewer to support our end users. That is changing: we are gradually switching to ISL Online. This article explains why we made this choice and what ISL Online is.