How To Fix KX808 - Enter a constant

SAP Error Message - Details

• Message type: E = Error

• Message class: KX - EC-EIS/EC-BP: Data basis, data collection

• Message number: 808

• Message text: Enter a constant

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 KX808 - Enter a constant ?

  The SAP error message KX808 ("Enter a constant") typically occurs in the context of cost center accounting or internal orders when a user is trying to enter a value that is expected to be a constant but is not provided correctly. This error can arise in various scenarios, such as when defining allocation rules, creating cost allocations, or during planning activities.
  Cause:
  The error is usually caused by one of the following:
  
  Missing Constant Value: The system expects a constant value (like a fixed amount or percentage) to be entered, but it is either missing or incorrectly formatted.
  Incorrect Field Entry: The field where the constant is supposed to be entered may have been left blank or filled with an invalid entry (like a variable or formula instead of a constant).
  Configuration Issues: There may be issues with the configuration of the allocation structure or the settings in the controlling area.
  
  Solution:
  To resolve the KX808 error, you can take the following steps:
  
  
  Check Input Fields: Ensure that all required fields are filled out correctly. Specifically, look for any fields that require a constant value and make sure they are not left blank.
  
  
  Enter a Valid Constant: If the field requires a numeric constant, ensure that you enter a valid number. If it requires a percentage, ensure that it is formatted correctly (e.g., 50% should be entered as 0.5).
  
  
  Review Allocation Rules: If you are working with allocation rules, review the rules to ensure that they are set up correctly and that all constants are defined.
  
  
  Consult Documentation: Refer to SAP documentation or help files related to the specific transaction or module you are working with for additional guidance on the expected input.
  
  
  Check Configuration: If you have access to configuration settings, check the settings in the controlling area to ensure that they are correctly defined.
  
  
  Seek Help from SAP Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error.
  
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to cost accounting, such as KSU5 (Create Activity Type), KSV5 (Change Activity Type), or KZB1 (Create Allocation).
  SAP Notes: Check SAP Notes for any updates or patches that may address this specific error.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify and resolve the cause of the KX808 error in SAP.