How To Fix KY391 - '&2' '&1' not allowed due to compound char.

SAP Error Message - Details

• Message type: E = Error

• Message class: KY - Messages for SAP-EIS: Presentation

• Message number: 391

• Message text: '&2' '&1' not allowed due to compound char.

What causes this issue?

The variable belongs to characteristic '&V2&', which is required for a
compound characteristic. The characteristic '&V3&' is filled with value
'&V4&'. As a compound characteristic exists, a value has to be entered
for the variable, with the existing combination '&V2&' '&V1&' and
'&V3&' '&V4&'.

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?

Enter another value.
It can sometimes be sensible to change the report so that characteristic
'&V3&' is also offered as a variable. Both values can then be entered
together.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KY391 - '&2' '&1' not allowed due to compound char. ?

  The SAP error message KY391 typically indicates that there is an issue with the use of compound characteristics in the context of Profitability Analysis (CO-PA) or similar modules. This error occurs when a characteristic that is part of a compound characteristic is being used in a way that is not allowed.
  Cause:
  The error message KY391 '&2' '&1' not allowed due to compound char. usually arises due to the following reasons:
  
  
  Compound Characteristics: In SAP, certain characteristics can be defined as compound characteristics, which means they are made up of multiple individual characteristics. If you try to use one of the individual characteristics of a compound characteristic in a context where the compound characteristic is expected, this error will occur.
  
  
  Incorrect Configuration: The configuration of the characteristics in the system may not be set up correctly, leading to conflicts when trying to use them in reports or analyses.
  
  
  Data Entry Issues: There may be issues with the data being entered or selected in reports, where the system expects a compound characteristic but receives an individual characteristic instead.
  
  
  Solution:
  To resolve the KY391 error, you can take the following steps:
  
  
  Check Characteristic Usage: Review the characteristics being used in your report or analysis. Ensure that you are using the correct compound characteristic instead of its individual components.
  
  
  Review Configuration: Go to the configuration settings for the characteristics in the SAP system. Ensure that the compound characteristics are defined correctly and that the individual characteristics are properly assigned.
  
  
  Adjust Reports/Queries: If you are running a report or query, modify it to use the appropriate compound characteristic instead of the individual characteristic that is causing the error.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the characteristics you are working with, especially if they are part of a complex data model.
  
  
  Seek Help from SAP Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance. They may have additional insights or solutions based on your specific configuration and usage.
  
  
  Related Information:
  
  Compound Characteristics: Understanding how compound characteristics work in SAP is crucial. They are often used to combine multiple dimensions of data for more complex analysis.
  Profitability Analysis (CO-PA): Familiarize yourself with the CO-PA module if you are working in that area, as it heavily relies on characteristics for reporting and analysis.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context or fixes.
  
  By following these steps, you should be able to identify the root cause of the KY391 error and implement a solution to resolve it.