How To Fix DDLS117 - Generic view cannot be set up due to duplicate fields

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 117

• Message text: Generic view cannot be set up due to duplicate fields

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS117 - Generic view cannot be set up due to duplicate fields ?

  The SAP error message DDLS117 indicates that there is an issue with setting up a generic view due to the presence of duplicate fields. This typically occurs when you are trying to create or modify a view in the Data Dictionary (DDIC) and there are fields with the same name or alias in the view definition.
  Cause:
  
  Duplicate Field Names: The most common cause of this error is that the view definition includes multiple fields with the same name. This can happen if you are joining tables that have fields with identical names without properly aliasing them.
  Inconsistent Field Definitions: If the underlying tables or structures have fields with the same name and you are not using aliases, the system cannot determine which field to reference.
  View Definition Issues: The way the view is defined may not properly account for field uniqueness, especially in complex joins or unions.
  
  Solution:
  To resolve the DDLS117 error, you can take the following steps:
  
  
  Check the View Definition:
  
  Open the view in the Data Dictionary (transaction SE11).
  Review the fields included in the view and identify any duplicates.
  
  
  
  Use Aliases:
  
  If you have fields with the same name from different tables, use aliases to differentiate them. For example, instead of just using field_name, you can use table1.field_name AS field_name1 and table2.field_name AS field_name2.
  
  
  
  Modify the Join Conditions:
  
  If the duplicates arise from joins, ensure that you are joining the tables correctly and that you are selecting only the necessary fields.
  
  
  
  Remove Unnecessary Fields:
  
  If certain fields are not needed in the view, consider removing them to avoid duplication.
  
  
  
  Recreate the View:
  
  If the view is complex and difficult to modify, consider recreating it from scratch with careful attention to field names and aliases.
  
  
  
  Check for Changes in Underlying Tables:
  
  If the underlying tables have been modified (e.g., fields added or renamed), ensure that the view is updated accordingly.
  
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) to view and modify the view definition.
  Documentation: Refer to SAP documentation on creating and managing views in the Data Dictionary for best practices.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message or provide additional guidance.
  
  By following these steps, you should be able to resolve the DDLS117 error and successfully set up your generic view in SAP.