How To Fix FDT_WD_TOOLS390 - Nested expressions executed during condition evaluation

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_WD_TOOLS - Message Class for tools

• Message number: 390

• Message text: Nested expressions executed during condition evaluation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_WD_TOOLS390 - Nested expressions executed during condition evaluation ?

  The SAP error message FDT_WD_TOOLS390 indicates that there is an issue with nested expressions in the context of condition evaluation within the SAP Fiori or SAP UI5 applications. This error typically arises when the system encounters complex logical conditions that involve nested expressions, which may not be supported or may exceed the allowed complexity.
  Cause:
  
  Complex Conditions: The error is often caused by overly complex or deeply nested logical conditions in the decision tables or rules defined in the FDT (Fiori Decision Table) framework.
  Syntax Issues: There may be syntax errors or incorrect logical operators used in the expressions.
  Limitations of the Framework: The FDT framework may have limitations on the depth of nested expressions that can be evaluated.
  
  Solution:
  
  Simplify Conditions: Review the conditions defined in your decision tables or rules and try to simplify them. Avoid deep nesting of expressions.
  Break Down Logic: If possible, break down complex conditions into simpler, separate conditions that can be evaluated independently.
  Check Syntax: Ensure that all expressions are correctly formatted and that the logical operators are used appropriately.
  Testing: After making changes, test the conditions to ensure they work as expected without triggering the error.
  Consult Documentation: Refer to the SAP documentation for the FDT framework to understand the limitations and best practices for defining conditions.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for condition evaluation.
  Fiori Elements Documentation: Review the official SAP Fiori Elements documentation for guidelines on creating decision tables and rules.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the conditions and the context in which the error occurs.