How To Fix APS_CKE_PARSER009 - No boolean 'not' expression is allowed.

SAP Error Message - Details

• Message type: E = Error

• Message class: APS_CKE_PARSER - CDS Key user tool - AST handler messages

• Message number: 009

• Message text: No boolean 'not' expression is allowed.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message APS_CKE_PARSER009 - No boolean 'not' expression is allowed. ?

  The SAP error message APS_CKE_PARSER009, which states "No boolean 'not' expression is allowed," typically occurs in the context of SAP Analytics Cloud (SAC) or SAP BusinessObjects when there is an issue with the syntax of a formula or expression that involves boolean logic.
  Cause:
  This error is generally caused by the use of a 'NOT' operator in a context where it is not permitted. This can happen in various scenarios, such as:
  
  Incorrect Syntax: The expression may be incorrectly structured, leading to the parser rejecting the use of the 'NOT' operator.
  Unsupported Operations: The specific version of the software or the context in which the expression is being evaluated may not support the use of 'NOT' in the way it has been applied.
  Logical Errors: The logical flow of the expression may be flawed, leading to an invalid boolean expression.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Review the Expression: Check the syntax of the expression where the error occurs. Ensure that the use of the 'NOT' operator is appropriate and correctly placed.
  
  
  Simplify the Logic: If possible, try to simplify the boolean logic. Instead of using 'NOT', consider restructuring the expression to avoid its use.
  
  
  Use Alternative Logic: If the logic can be expressed without the 'NOT' operator, rewrite the expression accordingly. For example, instead of NOT (A AND B), you could use A OR B if it fits the logic you are trying to achieve.
  
  
  Check Documentation: Refer to the official SAP documentation for the specific version you are using to understand the limitations and supported syntax for boolean expressions.
  
  
  Test in Isolation: If the expression is part of a larger formula, try isolating it and testing it independently to identify the exact cause of the error.
  
  
  Consult Community or Support: If the issue persists, consider reaching out to the SAP community forums or SAP support for further assistance.
  
  
  Related Information:
  
  SAP Documentation: Always refer to the latest SAP documentation for the specific product you are using, as syntax rules and supported features may change with updates.
  SAP Community: Engaging with the SAP community can provide insights from other users who may have encountered similar issues.
  Version-Specific Features: Be aware that different versions of SAP products may have different capabilities regarding boolean logic and expressions.
  
  By following these steps, you should be able to identify and resolve the cause of the APS_CKE_PARSER009 error in your SAP environment.