How To Fix VC2OD_DMT_ASSIST018 - Double negation is not allowed (NOT, &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: VC2OD_DMT_ASSIST - Message Class for Dependency Maintenance Table

• Message number: 018

• Message text: Double negation is not allowed (NOT, &1)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VC2OD_DMT_ASSIST018 - Double negation is not allowed (NOT, &1) ?

  The SAP error message VC2OD_DMT_ASSIST018 indicates that there is a double negation in the expression you are trying to use in a variant configuration context. This typically occurs when you have a logical expression that uses the NOT operator twice on the same condition, which is not allowed in the syntax of the configuration.
  Cause:
  The error arises when you have a condition that is structured in a way that it negates a negation, such as:
  
  NOT(NOT(condition))
  This is logically equivalent to just condition, but the system does not allow this double negation syntax.
  
  Solution:
  To resolve this error, you need to review the logical expressions in your variant configuration and eliminate any instances of double negation. Here are the steps you can take:
  
  
  Identify the Expression: Locate the specific condition or expression that is causing the error. This will usually be in the configuration settings where you define dependencies or constraints.
  
  
  Simplify the Logic: Rewrite the expression to remove the double negation. For example:
  
  Change NOT(NOT(condition)) to simply condition.
  If you have complex conditions, ensure that you are not inadvertently creating a double negation through nested conditions.
  
  
  
  Test the Changes: After making the necessary adjustments, test the configuration to ensure that it behaves as expected and that the error message no longer appears.
  
  
  Related Information:
  
  Variant Configuration: This error is specific to the variant configuration in SAP, which allows for the customization of products based on various characteristics and dependencies.
  Logical Operators: Familiarize yourself with the logical operators used in SAP variant configuration, such as AND, OR, and NOT, to avoid similar issues in the future.
  Documentation: Refer to SAP documentation or help resources for more detailed information on variant configuration and logical expressions.
  
  By following these steps, you should be able to resolve the error and ensure that your variant configuration works correctly without any logical inconsistencies.