How To Fix DDLS135 - Basis table & is in selection more than once; '$extension.*' not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 135

• Message text: Basis table & is in selection more than once; '$extension.*' not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS135 - Basis table & is in selection more than once; '$extension.*' not possible ?

  The SAP error message DDLS135 indicates that there is an issue with the definition of a database table or view in the Data Dictionary (DDIC). Specifically, it suggests that a basis table is being referenced more than once in a selection, which is not allowed. The message typically arises when you are trying to create or modify a database object (like a view) that includes the same table multiple times in the selection criteria.
  
  Cause:
  
  Duplicate Table References: The most common cause of this error is that the same table is included multiple times in the selection list of a view or a database object.
  Incorrect Join Conditions: If you are using joins, it may be that the same table is being joined multiple times without proper aliasing.
  View Definition Issues: The view definition may not be correctly structured, leading to ambiguity in the selection criteria.
  
  
  Solution:
  
  Check the View Definition: Review the definition of the