https://userapps.support.sap.com/sap/support/knowledge/en/2804109
2804109 - S/4HANA MM41 Class type "" not defined | SAP Knowledge Base Article
You have activated an add-on for retail in S/4HANA, but while creating a generic article the system gives the Message no. CL014 "Class type "" not defined".
class type
https://userapps.support.sap.com/sap/support/knowledge/en/2627584
2627584 - Error M3748 in button "Segmentation in Warehouse" in MM41/MM42/MM43 | SAP Knowledge Base...
When you navigate to tab "Logistics DC" in MM41/MM42/MM43 and click on button "Segmentation in Warehouse" or "MRP/Forecast Data" you get error message: "Record...
https://userapps.support.sap.com/sap/support/knowledge/en/2122832
2122832 - MM41/MM42 - Various error messages when assigning a class to an article master | SAP...
Various error messages occur when assigning a class to an article master in transaction MM41 or MM42.