How To Fix MM302 - You are not authorized to display key material master data

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 302

• Message text: You are not authorized to display key material master data

What causes this issue?

You have tried to display or maintain key data for the material (that
is, data valid for the whole client, such as the base unit of measure).
However, you do not have the authorization to do so.

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?

If you want to maintain key data for the material, please contact your
systems administrator.
Note for systems administrators
The authorization object concerned is M_MATE_MAN.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MM302 - You are not authorized to display key material master data ?

  The SAP error message MM302, which states "You are not authorized to display key material master data," typically indicates that the user does not have the necessary authorizations to access the material master data in the SAP system. This can occur in various scenarios, such as when trying to view or edit material master records.
  
  Cause:
  
  Authorization Issues: The primary cause of this error is that the user’s role does not include the necessary authorizations to access the material master data. This could be due to missing authorization objects or incorrect role assignments.
  User Profile Configuration: The user profile may not be configured correctly to allow access to the specific transaction or data.
  Data Protection Settings: Certain data protection settings may restrict access to sensitive material master data.
  
  
  Solution:
  
  Check User Roles: Verify the roles assigned to the user. You can do this by navigating to the user management transaction (e.g., SU01) and checking the roles