How To Fix FDT_EXPRESSIONS117 - Column name &1 is already used in decision table

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 117

• Message text: Column name &1 is already used in decision table

What causes this issue?

You have tried to add a column with name '&v1&' to the decision table.
However, a column with that name already exists in the table.

System Response

The column cannot be added to the table.

How to fix this error?

Rename the column to a name which is unique in the context of the
current decision table.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS117 - Column name &1 is already used in decision table ?

  The SAP error message FDT_EXPRESSIONS117 indicates that there is a duplicate column name in a decision table within the SAP system. This error typically arises when you are trying to create or modify a decision table and you inadvertently use the same column name more than once.
  Cause:
  
  Duplicate Column Names: The primary cause of this error is that the decision table has been defined with two or more columns that share the same name. This can happen during the initial creation of the table or when modifying an existing table.
  
  Solution:
  To resolve this error, you need to ensure that all column names in the decision table are unique. Here are the steps you can take:
  
  
  Review the Decision Table: Open the decision table in the SAP system and carefully check the column names.
  
  
  Rename Duplicate Columns: If you find any duplicate column names, rename them to ensure that each column has a unique identifier. You can do this by:
  
  Selecting the column with the duplicate name.
  Changing its name to something unique that reflects its purpose.
  
  
  
  Save Changes: After making the necessary changes, save the decision table and check if the error persists.
  
  
  Test the Decision Table: Once the changes are saved, test the decision table to ensure it functions as expected without any errors.
  
  
  Related Information:
  
  
  Decision Tables: Decision tables are used in SAP to define rules and conditions in a structured format. They are often used in business rules management and decision-making processes.
  
  
  SAP FDT (Flexible Decision Table): The Flexible Decision Table is a part of the SAP Business Rules Framework, which allows users to create and manage decision tables more effectively.
  
  
  Best Practices: When designing decision tables, it is a good practice to:
  
  Use clear and descriptive names for columns.
  Maintain a consistent naming convention to avoid confusion.
  Regularly review and refactor decision tables to ensure they remain organized and efficient.
  
  
  
  If you continue to experience issues after following these steps, consider consulting SAP documentation or reaching out to your SAP support team for further assistance.