How To Fix RSBO042 - Only one line in the left table can be selected with this function

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBO - Open Hub

• Message number: 042

• Message text: Only one line in the left table can be selected with this function

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSBO042 - Only one line in the left table can be selected with this function ?

  The SAP error message RSBO042, which states "Only one line in the left table can be selected with this function," typically occurs in the context of SAP BW (Business Warehouse) when you are trying to execute a query or a report that involves a selection from a left table (often a characteristic or dimension table) that requires a single selection but multiple entries have been selected.
  Cause:
  The error is usually caused by:
  
  Multiple Selections: You have selected multiple entries in a characteristic that is expected to have only one entry for the query to execute properly.
  Query Design: The query might be designed in such a way that it expects a single value for a certain characteristic, but the user has provided multiple values.
  Data Model Issues: There might be issues with the data model or the way the InfoObjects are set up, leading to ambiguity in the selection.
  
  Solution:
  To resolve the RSBO042 error, you can take the following steps:
  
  
  Check Selections: Review the selections you have made in the query. Ensure that you are only selecting one entry for the characteristic that is causing the issue. If you need to analyze multiple entries, consider running separate queries for each entry.
  
  
  Modify Query: If you have access to the query designer, you can modify the query to allow for multiple selections if that is appropriate for your analysis. However, be cautious as this may affect the logic of the report.
  
  
  Use Filters: Instead of selecting multiple values directly, consider using filters or variables that allow for dynamic selection based on user input.
  
  
  Consult Documentation: Check the SAP BW documentation or help resources for specific guidance on the query you are working with, as there may be additional constraints or requirements.
  
  
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with a BW expert who can provide more tailored assistance based on your specific environment and query design.
  
  
  Related Information:
  
  SAP BW Query Designer: Familiarize yourself with the Query Designer tool, as it allows you to create and modify queries, including setting up filters and variables.
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Training Resources: Consider training resources or documentation on SAP BW query design to better understand how to structure queries and handle selections effectively.
  
  By following these steps, you should be able to resolve the RSBO042 error and successfully execute your query.