How To Fix MM365 - Key fields for use data &1 and checkbox structure &2 are different

MM365 - Overview

• Message type: E = Error

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

• Message number: 365

• Message text: Key fields for use data &1 and checkbox structure &2 are different

What causes this issue?

The key fields in use data structure &V1& and checkbox structure &V2&
are different for material &V3&.

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 the entries in the key fields of use data structure &V1& and
checkbox structure &V2& for material &V3&.
Perhaps a key field is blank, or the values in &V1& and
&V2& do not match.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

MM365 - Details

• The SAP error message MM365, which states "Key fields for use data &1 and checkbox structure &2 are different," typically occurs in the context of Material Management (MM) when there is a mismatch between the key fields defined in the use data and the checkbox structure in a particular configuration or transaction.
  
  Cause:
  
  
  Mismatch in Key Fields: The error is primarily caused by a discrepancy between the key fields defined in the use data (like a material master record) and those defined in the checkbox structure (like a configuration or selection screen). This can happen if the structures are not aligned or if there have been changes in the data model that have not been reflected in the configuration.
  
  
  
  Configuration Issues: If the checkbox structure is not properly configured to match the key fields of the use data, this error can occur. This might happen after a system upgrade, changes in the data