How To Fix DT490 - Key with inverted individual definition must contain at least 2 columns

DT490 - Overview

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 490

• Message text: Key with inverted individual definition must contain at least 2 columns

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT490 - Key with inverted individual definition must contain at least 2 columns ?

  The SAP error message DT490, which states "Key with inverted individual definition must contain at least 2 columns," typically occurs in the context of defining a data structure or a database table where a key is defined incorrectly. This error is related to the use of inverted individual definitions in the context of data modeling, particularly in the ABAP Dictionary.
  
  Cause:
  The error arises when you attempt to define a key for a table or structure using an inverted individual definition (which is a specific way of defining keys in SAP) but have specified only one column in the key. Inverted individual definitions require at least two columns to function correctly. 
  
  Solution:
  To resolve this error, you should:
  
  
  Check Key Definition: Review the key definition for the table or structure where the error occurred. Ensure that you have defined at least two columns in the key.
  
  
  Modify Key Fields: If you have only one column