How To Fix FDT_EXPRESSIONS890 - &1 must have 1 result column to be used in expression language

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 890

• Message text: &1 must have 1 result column to be used in expression language

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS890 - &1 must have 1 result column to be used in expression language ?

  The SAP error message FDT_EXPRESSIONS890 indicates that there is an issue with an expression in the context of SAP's Flexible Data Import (FDI) or similar functionalities where expressions are used. The error message states that the expression must have exactly one result column to be used in the expression language.
  Cause:
  This error typically occurs when:
  
  Multiple Result Columns: The expression you are trying to use returns multiple columns instead of a single result column. In expression languages, especially in SAP, expressions are expected to yield a single value for them to be valid.
  Incorrect Syntax: There might be a syntax error in the expression that leads to it being interpreted as returning multiple columns.
  Data Source Issues: The data source or the context in which the expression is being evaluated may not be set up correctly, leading to unexpected results.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Expression: Review the expression you are using to ensure that it is designed to return a single result column. If it is returning multiple columns, modify it to return only one.
  
  
  Modify the Query: If you are using a query or a function that is expected to return a single value, ensure that it is correctly structured. For example, if you are using SQL-like syntax, ensure that you are using aggregate functions (like SUM, COUNT, etc.) or selecting a specific column.
  
  
  Debugging: If you are unsure about the output of your expression, try running it in a test environment or using a simpler version of the expression to see what it returns.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific version you are using to understand the expected syntax and structure for expressions.
  
  
  Seek Help from SAP Community: If you are still facing issues, consider reaching out to the SAP community forums or support for assistance. Provide them with the specific expression you are using and the context in which the error occurs.
  
  
  Related Information:
  
  SAP FDT (Flexible Data Transfer): This is a tool used for data transfer and transformation in SAP systems. Understanding how expressions work within this context is crucial.
  Expression Language: Familiarize yourself with the expression language used in SAP, as it may have specific rules and syntax that need to be followed.
  Error Handling: Learn about common error handling practices in SAP to better manage and troubleshoot issues as they arise.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.