How To Fix MPN01001 - Material type cannot be an FFFF class and and IM-MPN at the same time

MPN01001 - Overview

• Message type: E = Error

• Message class: MPN01 - MPN Message: Material Master / customizing

• Message number: 001

• Message text: Material type cannot be an FFFF class and and IM-MPN at the same time

What causes this issue?

For the material type you have set the both the indicator 'FFF class'
and the indicator 'manufacturer part (non inventory-managed).
These indicators limit the choice of user departments each time to
different user departments.

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 either one or neither of the indicators. In the case of type
'FFF class' the user departments are limited to
Basic view,
in the case of type 'manufacturer part (non inventory-managed)' they
limited to
Classification
Purchasing

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MPN01001 - Material type cannot be an FFFF class and and IM-MPN at the same time ?

  The SAP error message MPN01001 indicates that there is a conflict in the configuration of a material type in the context of the Material Planning Network (MPN) functionality. Specifically, the error states that a material type cannot be classified as both an FFFF class (which typically refers to a non-stock material) and as an IM-MPN (Inventory Management - Material Planning Network) material at the same time.
  
  Cause:
  
  Material Type Configuration: The material type you are trying to use is configured in such a way that it is classified as an FFFF class, which is generally used for non-stock materials. However, it is also being treated as an IM-MPN material, which is intended for stock materials that are part of the MPN process.
  Inconsistent Settings: There may be inconsistent settings in the material master data or in the configuration of the material types that lead to this conflict.
  
  
  Solution:
  
  
  Check Material Type Settings:
  
  Go to the configuration