BRAIN_DEV659 - &1 is marked as cell-unique, but it is missing/not unique in drilldown

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 659

• Message text: &1 is marked as cell-unique, but it is missing/not unique in drilldown

What causes this issue?

The characteristic &V1& is marked as 'Unique for Every Cell', but there
are cells where it is not uniquely filtered. Therefore it has to appear
in the start drilldown without any aggregation possibility. This
includes:
totals
cumulation
display hierarchy
any of the above mentioned on a characteristic with a higher position on
the same axis

System Response

The query cannot be activated.

How to fix this error?

Correct the query definition.

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.

AnswerBot

• What is the cause and solution for SAP error message BRAIN_DEV659 - &1 is marked as cell-unique, but it is missing/not unique in drilldown ?

  The SAP error message BRAIN_DEV659 indicates that a specific characteristic or key figure in your query is marked as "cell-unique," but it is either missing or not unique in the drilldown context. This typically occurs in SAP BW (Business Warehouse) when you are working with queries in BEx (Business Explorer) Analyzer or similar tools.
  Cause:
  
  Cell-Unique Characteristics: The characteristic that is marked as cell-unique is expected to have a unique value for each cell in the query result. If the characteristic is not included in the query or if there are multiple values for that characteristic in the context of the query, this error will occur.
  Data Model Issues: There may be issues with the underlying data model, such as missing data or incorrect relationships between InfoObjects.
  Query Design: The query might be designed in a way that does not properly handle the unique constraints of the characteristics involved.
  
  Solution:
  
  
  Check Query Design:
  
  Open the query in the BEx Query Designer.
  Verify that the characteristic marked as cell-unique is included in the query's drilldown.
  Ensure that the characteristic is not filtered out or hidden in the query layout.
  
  
  
  Review Data:
  
  Check the underlying data in the InfoProvider to ensure that the characteristic has unique values for the relevant data set.
  If the characteristic is supposed to be unique but has duplicates, investigate the data source to resolve any data quality issues.
  
  
  
  Adjust Cell-Unique Settings:
  
  If the characteristic does not need to be cell-unique for your analysis, consider changing its properties in the InfoObject settings or in the query definition.
  
  
  
  Test the Query:
  
  After making adjustments, run the query again to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes related to BEx queries and cell-unique characteristics for additional guidance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  BEx Query Designer: Familiarize yourself with the features of BEx Query Designer, especially regarding how to manage characteristics and key figures.
  Data Warehousing Best Practices: Understanding best practices in data modeling and query design can help prevent similar issues in the future.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP BW expert for further assistance.