How To Fix BRAIN_DEV034 - No exception aggregation in HANA/BWA because of free char. currency/unit

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN_DEV - BRAIN messages (for use by development)

• Message number: 034

• Message text: No exception aggregation in HANA/BWA because of free char. currency/unit

What causes this issue?

Time characteristic &V1& of stock coverage key figure &V2& is missing in
InfoProvider &V3&. The time characteristic of a stock coverage key
figure is the exception aggregation reference characteristic of the key
figure. The stock coverage calculation requires that the data can be
retrieved from the InfoProvider in the granularity of the time
characteristic.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN_DEV034 - No exception aggregation in HANA/BWA because of free char. currency/unit ?

  The SAP error message BRAIN_DEV034 indicates that there is an issue with exception aggregation in HANA or BWA (Business Warehouse Accelerator) due to the presence of free characteristics, specifically related to currency or unit of measure. This error typically arises when you are trying to perform an aggregation operation that involves free characteristics that are not compatible with the aggregation process.
  Cause:
  
  
  Free Characteristics: The presence of free characteristics (like currency or unit of measure) in the query can prevent the system from performing exception aggregation. Exception aggregation is a method used to handle specific cases in data aggregation, such as summing up values while ignoring certain exceptions.
  
  
  Incompatible Aggregation: The aggregation logic may not be able to handle the free characteristics properly, leading to this error. For example, if you are trying to aggregate sales data that includes different currencies without a proper conversion or handling mechanism, the system cannot perform the aggregation.
  
  
  Modeling Issues: There may be issues in the data model or the way the InfoProvider is set up, which can lead to this error when executing queries.
  
  
  Solution:
  
  
  Review Query Design: Check the query design in the SAP BW query. Ensure that you are not using free characteristics that could interfere with the aggregation process. If necessary, remove or replace them with appropriate characteristics.
  
  
  Use Currency Conversion: If currency is a free characteristic, consider implementing currency conversion logic in your query or data model to ensure that all values are aggregated in a consistent currency.
  
  
  Adjust Aggregation Settings: Review the aggregation settings in the InfoProvider or the query. Ensure that the settings are compatible with the data types and characteristics being used.
  
  
  Check Data Model: Review the underlying data model to ensure that it is set up correctly. This includes checking the InfoObjects, InfoProviders, and any transformations that may be affecting the data.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to exception aggregation and free characteristics for additional guidance and best practices.
  
  
  Testing: After making changes, test the query again to see if the error persists. It may be helpful to isolate the issue by running simpler queries to identify the specific characteristic causing the problem.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review SAP BW and HANA documentation for best practices on handling free characteristics and exception aggregation.
  
  By following these steps, you should be able to resolve the BRAIN_DEV034 error and successfully perform the desired aggregation in your SAP BW/HANA environment.