How To Fix AD051 - Identical field names in lines & and &; change one of the field names

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 051

• Message text: Identical field names in lines & and &; change one of the field names

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AD051 - Identical field names in lines & and &; change one of the field names ?

  The SAP error message AD051 indicates that there are identical field names in the context of a data dictionary object, such as a structure or a table. This error typically arises when you are trying to create or modify a structure or table that contains fields with the same name, which is not allowed in SAP.
  Cause:
  The error occurs because:
  
  You have defined multiple fields in a structure or table with the same name.
  This can happen when copying fields from one structure to another or when manually defining fields without ensuring their uniqueness.
  
  Solution:
  To resolve the AD051 error, you need to ensure that all field names within the same structure or table are unique. Here are the steps to do this:
  
  
  Identify the Duplicate Fields: Check the error message details, which usually specify the line numbers where the duplicate field names are found. Review the structure or table definition to identify the fields that are causing the conflict.
  
  
  Rename Fields: Change the name of one of the duplicate fields to ensure that all field names are unique. You can do this by:
  
  Modifying the field name directly in the data dictionary (SE11).
  Ensuring that the new name adheres to SAP naming conventions (e.g., starting with a letter, not exceeding 30 characters, etc.).
  
  
  
  Activate the Object: After making the changes, activate the structure or table to apply the modifications.
  
  
  Test the Changes: If applicable, test the changes in the relevant transactions or programs to ensure that everything functions as expected.
  
  
  Related Information:
  
  Naming Conventions: Familiarize yourself with SAP's naming conventions for fields, structures, and tables to avoid similar issues in the future.
  Data Dictionary (SE11): Use transaction SE11 to manage and view data dictionary objects, where you can create, modify, and activate tables and structures.
  Transport Requests: If you are working in a development environment, ensure that your changes are included in a transport request for proper migration to other environments (e.g., QA, Production).
  
  By following these steps, you should be able to resolve the AD051 error and prevent it from occurring in the future.