How To Fix KN406 - Summarization levels faulty (&1 &2, see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: KN - Reporting for Costing

• Message number: 406

• Message text: Summarization levels faulty (&1 &2, see long text)

What causes this issue?

The summarization levels that are updated by data collection contain
errors.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

Data collection could not be carried out.

How to fix this error?

Delete all summarization levels. Then carry out a new data collection
run for the entire reporting time frame.
If the error recurs, report the following information in addition to the
error number of this message:
Status of summarization level 1: &V1&
Status of summarization level 2: &V2&

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KN406 - Summarization levels faulty (&1 &2, see long text) ?

  The SAP error message KN406 ("Summarization levels faulty (&1 &2, see long text)") typically occurs in the context of the SAP system's handling of customer master data, particularly when there are issues with the summarization levels for customer data in the system.
  
  Cause:
  The error is usually caused by one of the following issues:
  
  Incorrect Configuration: The summarization levels for customer master data may not be correctly configured in the system.
  Data Inconsistencies: There may be inconsistencies or missing entries in the summarization levels table, which can lead to this error.
  Custom Development: If there are custom developments or modifications in the system that affect how customer data is summarized, this could lead to errors.
  Transport Issues: If the configuration or data was transported from one system to another (e.g., from development to production), there may have been issues during the transport process.
  
  
  Solution:
  To resolve the KN406 error, you can take the following steps:
  
  
  Check Configuration:
  
  Go to the