How To Fix ESH_ENG_CDS_ABAP513 - Select a single line

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_ENG_CDS_ABAP - ES-CDS/ABAP

• Message number: 513

• Message text: Select a single line

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_ENG_CDS_ABAP513 - Select a single line ?

  The SAP error message ESH_ENG_CDS_ABAP513 with the description "Select a single line" typically occurs in the context of using Core Data Services (CDS) views in ABAP when a query or operation expects a single result but receives multiple rows instead. This can happen in various scenarios, such as when using a SELECT statement that is expected to return a single record but actually returns multiple records.
  Cause:
  
  Multiple Records Returned: The most common cause of this error is that the query being executed is returning multiple rows when only one row is expected. This can happen if the WHERE clause is not restrictive enough or if the data in the underlying tables has duplicates.
  Incorrect Logic in Code: The logic in the ABAP code that processes the result set may be expecting a single record but is not handling the possibility of multiple records being returned.
  Misconfiguration of CDS View: If the CDS view is not properly defined to ensure uniqueness, it may lead to multiple records being returned.
  
  Solution:
  
  Review the Query: Check the query or the CDS view definition to ensure that it is designed to return a single record. You may need to add more restrictive conditions in the WHERE clause.
  Use Aggregation: If appropriate, consider using aggregation functions (like MAX, MIN, etc.) to ensure that only a single value is returned.
  Handle Multiple Records: If the logic requires handling multiple records, modify the ABAP code to process the result set accordingly, such as using a loop to iterate through the records.
  Check Data Integrity: Ensure that the underlying data does not have duplicates if the expectation is to return a single record. You may need to clean up the data or adjust the logic to handle duplicates.
  Debugging: Use debugging tools to trace the execution and see what data is being returned by the query. This can help identify why multiple records are being returned.
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a way to define semantically rich data models in SAP. Understanding how to create and use CDS views effectively can help prevent such issues.
  ABAP Programming: Familiarity with ABAP programming concepts, especially regarding data retrieval and processing, is essential for troubleshooting this error.
  SAP Notes and Documentation: Check SAP Notes and the official SAP documentation for any known issues or additional guidance related to this error message.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.