How To Fix COM_DIFF_KEY026 - Key type &1 of set type &2 is not compatible with key type &3

COM_DIFF_KEY026 - Overview

• Message type: E = Error

• Message class: COM_DIFF_KEY - Messages for Differentiation Key

• Message number: 026

• Message text: Key type &1 of set type &2 is not compatible with key type &3

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_DIFF_KEY026 - Key type &1 of set type &2 is not compatible with key type &3 ?

  The SAP error message COM_DIFF_KEY026 indicates that there is a mismatch in key types when working with characteristic sets in the SAP system. This error typically arises in the context of SAP's configuration and master data management, particularly when dealing with characteristics and their associated values in the context of variant configuration or classification.
  
  Cause:
  The error occurs when you attempt to use a key type that is not compatible with the expected key type for a specific set type. This can happen in scenarios such as:
  
  Inconsistent Configuration: The configuration of the characteristic set does not match the expected key types defined in the system.
  Incorrect Assignment: You may be trying to assign a characteristic or value that does not belong to the expected set type.
  Data Migration Issues: If data has been migrated from another system or if there have been changes in the configuration, it may lead to inconsistencies in key types.
  
  
  Solution:
  To