How To Fix S4108 - Field & in table & cannot be specified twice

S4108 - Overview

• Message type: E = Error

• Message class: S4 - POPUP_GET_VALUES... and other central functions

• Message number: 108

• Message text: Field & in table & cannot be specified twice

Self-Explanatory Message

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S4108 - Details

• The SAP error message S4108 indicates that a field in a specified table is being referenced or defined more than once in a context where it should only be specified once. This typically occurs in the context of data dictionary objects, such as when defining a structure, table, or view in the ABAP Dictionary.
  
  Cause:
  
  Duplicate Field Definition: The most common cause of this error is that the same field is being defined multiple times in a structure or table definition.
  Incorrect Join Conditions: If you are working with database views or joins, this error can occur if the same field is included from multiple tables without proper aliasing.
  Inconsistent Field Names: If you are trying to include fields from different tables that have the same name without proper handling, it can lead to this error.
  
  
  Solution:
  
  Check Field Definitions: Review the structure or table definition where the error occurs. Ensure that each field is defined