How To Fix FDT_CORE881 - Invalid condition; &1 does not have a boolean value

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 881

• Message text: Invalid condition; &1 does not have a boolean value

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE881 - Invalid condition; &1 does not have a boolean value ?

  The SAP error message FDT_CORE881 indicates that there is an issue with a condition in a decision table or a similar configuration where a non-boolean value is being evaluated as a boolean. This typically occurs in the context of SAP's Flexible Decision Table (FDT) framework, which is used for decision-making processes in various applications.
  Cause:
  The error arises when:
  
  A condition in a decision table is expecting a boolean value (true/false) but is receiving a different data type (e.g., string, integer).
  The condition logic is incorrectly defined, leading to an invalid evaluation.
  There may be a misconfiguration in the decision table or the underlying data model.
  
  Solution:
  To resolve the FDT_CORE881 error, you can follow these steps:
  
  
  Check the Decision Table Configuration:
  
  Review the decision table where the error is occurring. Ensure that all conditions are defined correctly and that they are expected to return boolean values.
  
  
  
  Validate Data Types:
  
  Ensure that the data types of the fields used in the conditions are compatible with boolean evaluations. If a field is expected to be boolean, make sure it is defined as such in the data model.
  
  
  
  Review Condition Logic:
  
  Examine the logic used in the conditions. If you are using expressions, ensure that they are correctly formulated to return boolean results.
  
  
  
  Test with Sample Data:
  
  If possible, test the decision table with sample data to see if the error persists. This can help identify if the issue is with specific data inputs.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources related to the Flexible Decision Table framework for additional guidance on defining conditions and data types.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can trace the execution of the decision table to identify where the invalid condition is being triggered.
  
  
  
  Seek Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support or consulting with a colleague who has experience with FDT configurations.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to the FDT framework.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  Training and Documentation: Familiarize yourself with the Flexible Decision Table framework through SAP training materials or official documentation to better understand how to configure conditions correctly.
  
  By following these steps, you should be able to identify and resolve the cause of the FDT_CORE881 error in your SAP environment.