How To Fix MM139 - Not possible to configure a plant-specific material variant here

MM139 - Overview

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 139

• Message text: Not possible to configure a plant-specific material variant here

What causes this issue?

You wanted to configure a plant-specific
<DS:GLOS.material_variant>material variant</>. However, this is not
possible in the following cases:
When scheduling the creation or changing of a material
If you have not specified a plant
If you have not specified a <DS:GLOS.configurable_material>configurable
material</>
If quantity-based inventory management is not defined for this material

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?

Check and, if necessary, extend your data.

Error message extract from SAP system. Copyright SAP SE.

MM139 - Details

• The SAP error message MM139 ("Not possible to configure a plant-specific material variant here") typically occurs in the context of material management when you are trying to create or modify a material variant that is plant-specific, but the system is unable to process the request due to configuration issues.
  
  Cause:
  
  Material Type Configuration: The material type you are working with may not be configured to allow plant-specific variants. This can happen if the material type is not set up correctly in the system.
  Missing Plant Assignment: The material may not be assigned to the specific plant you are trying to configure it for.
  Configuration Settings: The configuration settings for the material variant may not be properly defined in the system.
  Incorrect Transaction: You might be using a transaction that does not support plant-specific configurations.
  
  
  Solution:
  
  
  Check Material Type Configuration:
  
  Go to the configuration settings for the material type in transaction SPRO.
  Navigate to Logistics - General > Material Master