How To Fix RSOS_SEARCH028 - Database field name &1 is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: RSOS_SEARCH -

• Message number: 028

• Message text: Database field name &1 is not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSOS_SEARCH028 - Database field name &1 is not unique ?

  The SAP error message RSOS_SEARCH028 indicates that there is a problem with the uniqueness of a database field name in the context of a query or report. This error typically arises when the system encounters multiple fields with the same name in the data source being queried, which can lead to ambiguity in data retrieval.
  Cause:
  
  Duplicate Field Names: The most common cause of this error is that the data source (like a table or view) contains multiple fields with the same name. This can happen if there are joins between tables that have overlapping field names.
  Incorrect Query Design: If a query is designed to pull data from multiple tables without proper aliasing or qualification of field names, it can lead to this error.
  Data Source Changes: Changes in the underlying data model, such as adding new fields or modifying existing ones, can also lead to this issue if the query is not updated accordingly.
  
  Solution:
  
  Check the Data Source: Review the data source (tables/views) being used in the query to identify any duplicate field names. You can do this by examining the structure of the tables involved.
  Use Aliases: If you are joining multiple tables that have fields with the same name, use aliases in your query to differentiate between them. For example, instead of just using field_name, use table1.field_name and table2.field_name.
  Modify the Query: Adjust the query to ensure that each field is uniquely identified. This may involve changing the way you select fields or restructuring the query.
  Check for Updates: If the error occurred after a recent change in the data model, ensure that all queries and reports are updated to reflect these changes.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Refer to SAP documentation for guidelines on best practices for query design, especially when dealing with joins and multiple data sources.
  Testing: After making changes, test the query thoroughly to ensure that it runs without errors and returns the expected results.
  
  By following these steps, you should be able to resolve the RSOS_SEARCH028 error and ensure that your queries run smoothly.