How To Fix KN306 - Hierarchy error: Characteristic value too long

KN306 - Overview

• Message type: E = Error

• Message class: KN - Reporting for Costing

• Message number: 306

• Message text: Hierarchy error: Characteristic value too long

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

KN306 - Details

• The SAP error message KN306, which states "Hierarchy error: Characteristic value too long," typically occurs in the context of SAP's master data management, particularly when dealing with characteristics in classification or when working with hierarchical data structures.
  
  Cause:
  The error is triggered when a characteristic value being entered or processed exceeds the maximum length defined for that characteristic in the system. Each characteristic in SAP has a predefined length, and if the value you are trying to assign to it exceeds this length, the system will throw this error.
  
  Solution:
  To resolve the KN306 error, you can take the following steps:
  
  
  Check Characteristic Definition:
  
  Go to the transaction code CT04 (for characteristics) or CT03 (for displaying characteristics).
  Look up the characteristic that is causing the error and check its maximum length. 
  
  
  
  Modify the Value:
  
  If the value you are trying to enter exceeds the defined length, you will need to either shorten the value or modify the characteristic