How To Fix MR079 - Choose a class type for grouping together plants

MR079 - Overview

• Message type: E = Error

• Message class: MR - Stock overview for generic materials

• Message number: 079

• Message text: Choose a class type for grouping together plants

What causes this issue?

Several class types are defined for application 04 (stock overview) in
Customizing for <LS>Basic Data Retail</> under <LS>Applications</>. You
can use these class types to group together plants in the
classification system.
Depending on the class type you used to create your plant groups for
the stock overview, you must choose the corresponding class type here
so that the required assignment of plants to plant groups can be
determined.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Choose one of the class types offered. The system uses this class type
to determine the base plant groups for which the stock data of the
plants assigned is totalled.

Error message extract from SAP system. Copyright SAP SE.

MR079 - Details

• The SAP error message MR079, which states "Choose a class type for grouping together plants," typically occurs in the context of Material Management (MM) when you are trying to create or modify a material master record or when dealing with classification in SAP.
  
  Cause:
  This error usually arises when the system expects you to assign a class type for the classification of materials across different plants, but no class type has been specified. Class types are used in SAP to categorize materials and can be essential for various functionalities, including reporting and material management.
  
  Solution:
  To resolve the MR079 error, you can follow these steps:
  
  
  Access the Classification System:
  
  Go to the transaction code CL02 (Change Class) or CL01 (Create Class) in SAP.
  
  
  
  Define Class Type:
  
  Ensure that you have defined a class type that is appropriate for your materials. You can create a new class type if necessary.
  Make sure that the class type is set up to