How To Fix CNV_12000053 - More than one row was selected; only select one row

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_12000 - Messages for shorttext and description conversion

• Message number: 053

• Message text: More than one row was selected; only select one row

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 CNV_12000053 - More than one row was selected; only select one row ?

  The SAP error message CNV_12000053 indicates that a query or operation is attempting to select more than one row from a database table or view when only a single row is expected. This error typically occurs in the context of data migration or conversion processes, particularly when using SAP's Data Migration tools or during custom ABAP programs.
  Cause:
  
  Multiple Records Returned: The most common cause of this error is that the SQL query or selection criteria used in the program is returning multiple records instead of a single record. This can happen if the WHERE clause is not specific enough to uniquely identify a single row.
  Data Integrity Issues: There may be data integrity issues in the source system, where duplicate records exist that should not be there.
  Incorrect Logic in Code: The logic in the ABAP code or the migration tool may be flawed, leading to an attempt to fetch multiple rows when only one is expected.
  
  Solution:
  
  Review the Query: Check the SQL query or selection logic to ensure that it is designed to return only one row. This may involve adding more specific conditions to the WHERE clause.
  Check for Duplicates: Investigate the underlying data to see if there are indeed multiple records that match the selection criteria. If duplicates exist, you may need to clean up the data or adjust the selection criteria.
  Modify the Code: If you are working with custom ABAP code, modify the code to handle cases where multiple rows might be returned. You can use SELECT SINGLE instead of SELECT to ensure that only one row is fetched.
  Use Aggregation: If appropriate, consider using aggregation functions (like MAX, MIN, etc.) to reduce multiple rows to a single value.
  Debugging: If you are unsure where the issue lies, use debugging tools to step through the code and see what data is being fetched and why multiple rows are being returned.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message CNV_12000053.
  Documentation: Review the documentation for the specific migration tool or program you are using to understand the expected behavior and constraints.
  Data Model: Understand the data model of the source and target systems to ensure that the mappings and transformations are correctly defined.
  
  By addressing the root cause of the error, you can resolve the issue and ensure that your data migration or conversion process runs smoothly.