How To Fix RSTRAN566 - Rule (target field: &2): Check aggregation 'Summation'

SAP Error Message - Details

• Message type: E = Error

• Message class: RSTRAN - Messages for Transformation

• Message number: 566

• Message text: Rule (target field: &2): Check aggregation 'Summation'

What causes this issue?

The selected aggregation behavior <ZK>summation </>(or <ZK>maximum </>or
<ZK>minimum</>) should not be used for the target field &v2&. The
DataSource &v3& is delta-enabled. The additive update can result in an
identical key due when you load deltas.
Example: If 10 items are changed to 20 items, 30 items might be returned
instead of the 20 items expected.

System Response

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

How to fix this error?

Check whether the selected aggregation behavior is correct.

Procedure for System Administrators

Internal rule ID &V1&

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSTRAN566 - Rule (target field: &2): Check aggregation 'Summation' ?

  The SAP error message RSTRAN566 typically occurs in the context of data extraction or transformation processes, particularly when working with SAP BW (Business Warehouse) or SAP HANA. This error indicates that there is an issue with the aggregation rule defined for a target field in a transformation.
  Cause:
  The error message "RSTRAN566 Rule (target field: &2): Check aggregation 'Summation'" suggests that there is a problem with the aggregation method specified for a particular field in the transformation. The most common causes include:
  
  
  Incorrect Aggregation Type: The aggregation type for the target field may not be set correctly. For example, if the field is supposed to sum values but is set to a different aggregation type (like average or count), it can trigger this error.
  
  
  Data Type Mismatch: The data type of the source field may not be compatible with the aggregation method defined for the target field.
  
  
  Missing or Incorrect Mapping: The mapping between the source and target fields may be incorrect or incomplete, leading to issues during the data transformation process.
  
  
  Inconsistent Data: If the source data contains null values or unexpected formats, it may cause issues during aggregation.
  
  
  Solution:
  To resolve the RSTRAN566 error, you can follow these steps:
  
  
  Check Aggregation Settings:
  
  Go to the transformation in the SAP BW system.
  Locate the target field mentioned in the error message.
  Verify that the aggregation type is set to "Summation" if that is the intended operation.
  
  
  
  Review Data Types:
  
  Ensure that the data types of the source and target fields are compatible. For summation, the source field should typically be a numeric type.
  
  
  
  Validate Mapping:
  
  Check the mapping between the source and target fields to ensure that it is correctly defined. Make sure that all necessary fields are mapped appropriately.
  
  
  
  Inspect Source Data:
  
  Review the source data for any inconsistencies, such as null values or incorrect formats. Clean the data if necessary.
  
  
  
  Test the Transformation:
  
  After making the necessary adjustments, test the transformation to see if the error persists.
  
  
  
  Consult Documentation:
  
  If the issue continues, refer to SAP documentation or community forums for additional insights or similar cases.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to this error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  BW/4HANA Documentation: If you are using BW/4HANA, consult the specific documentation for aggregation rules and transformations.
  
  By following these steps, you should be able to identify and resolve the cause of the RSTRAN566 error in your SAP BW or HANA environment.