How To Fix CNV_00001245 - Aggregation type specified for non-aggregated field &1 of table &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 245

• Message text: Aggregation type specified for non-aggregated field &1 of table &2

What causes this issue?

Field &V1& of table &V2& has the aggregation type set although the
conversion scenario for table &V2& doesn't involve aggregation of field
values.

System Response

Status is set to 'Warning'.

How to fix this error?

Remove aggregation type specification for field &V1& of table &V2& or
change the duplicate processing type to 'G' (aggregation of selected
fields) or 'P' (priority - it also allows aggregation of selected
fields)

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001245 - Aggregation type specified for non-aggregated field &1 of table &2 ?

  The SAP error message CNV_00001245 indicates that there is an issue with the aggregation type specified for a non-aggregated field in a table during a data conversion or migration process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transformation processes.
  Cause:
  The error occurs when:
  
  An aggregation type (like SUM, AVG, COUNT, etc.) is incorrectly assigned to a field that is not designed to be aggregated. 
  The field in question is likely a detail or transactional field that does not support aggregation, meaning it should be treated as a single value rather than a summary statistic.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Field and Table: Check the error message for the specific field (&1) and table (&2) that is causing the issue. 
  
  
  Review the Data Mapping: Look at the data mapping or transformation rules you have set up for the migration. Ensure that you are not trying to apply an aggregation function to a field that should not be aggregated.
  
  
  Modify the Aggregation Type: If the field is indeed a non-aggregated field, remove any aggregation type specified for it in your mapping or transformation logic.
  
  
  Consult Documentation: Refer to the SAP documentation or data migration guidelines for the specific table and field to understand the expected data types and aggregation rules.
  
  
  Test the Changes: After making the necessary adjustments, re-run the migration or data transformation process to see if the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions for this specific error.
  Data Migration Tools: Familiarize yourself with the tools and methodologies used for data migration in SAP, such as the SAP S/4HANA Migration Cockpit, LSMW (Legacy System Migration Workbench), or other ETL (Extract, Transform, Load) tools.
  Field Characteristics: Understand the characteristics of the fields in the source and target systems, including their data types, constraints, and whether they support aggregation.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to successfully complete your data migration or transformation process.