How To Fix FDT_EXPRESSIONS114 - Derived columns (here: column &1) cannot be flagged as optional

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 114

• Message text: Derived columns (here: column &1) cannot be flagged as optional

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS114 - Derived columns (here: column &1) cannot be flagged as optional ?

  The SAP error message FDT_EXPRESSIONS114 indicates that there is an issue with derived columns in a data model or expression where the system is trying to flag a derived column as optional, which is not allowed. This typically occurs in the context of SAP Data Intelligence or SAP HANA when working with data flows or transformations.
  Cause:
  The error arises because derived columns are calculated based on other columns and do not have a direct source of data. As such, they cannot be marked as optional since their existence is contingent upon the values of the source columns. If the source columns are not present or do not contain data, the derived column cannot be computed.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Derived Column Definition: Check the definition of the derived column in your data flow or expression. Ensure that it is correctly defined and that it does not attempt to be marked as optional.
  
  
  Remove Optional Flag: If you have explicitly set the derived column to be optional, remove that setting. Derived columns should always be treated as mandatory since they depend on the existence of their source columns.
  
  
  Check Source Columns: Ensure that the source columns from which the derived column is calculated are present and correctly defined. If the source columns are optional, consider how that impacts the derived column.
  
  
  Modify Data Flow Logic: If the logic of your data flow requires that the derived column can be optional, you may need to rethink your approach. You could create a conditional expression that checks for the presence of the source columns before calculating the derived column.
  
  
  Testing: After making the necessary changes, test the data flow or expression to ensure that it runs without errors and produces the expected results.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on derived columns and expressions in the context of your specific SAP product (e.g., SAP HANA, SAP Data Intelligence).
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  SAP Notes: Look for any relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to resolve the error and ensure that your data model or expression functions correctly.