How To Fix KU306 - Characteristic & has an invalid format

KU306 - Overview

• Message type: E = Error

• Message class: KU - Costing: Rollup

• Message number: 306

• Message text: Characteristic & has an invalid format

What causes this issue?

The characteristic's format is invalid. The characteristic cannot be
included in the hierarchy as a summarization characteristic.
Allowed formats are:
character format
numerical format without decimal places and without plus/minus sign

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 a characteristic that has a valid format.

Error message extract from SAP system. Copyright SAP SE.

KU306 - Details

• The SAP error message KU306, which states that "Characteristic & has an invalid format," typically occurs in the context of SAP's classification system, particularly when dealing with characteristics in classification or variant configuration.
  
  Cause:
  The error is usually caused by one of the following issues:
  
  Incorrect Data Type: The characteristic may be defined with a specific data type (e.g., numeric, alphanumeric) that does not match the format of the value being entered.
  Length Exceeded: The value being entered may exceed the maximum length defined for the characteristic.
  Invalid Characters: The value may contain characters that are not allowed based on the characteristic's definition (e.g., special characters in a numeric field).
  Missing Required Fields: If the characteristic is required and not filled in correctly, it may trigger this error.
  
  Configuration Issues: There may be issues with the configuration of the characteristic in the classification system.
  
  
  Solution:
  To resolve the KU306 error, you can take the following steps:
  
  
  Check Characteristic Definition:
  
  Go to