How To Fix DMCLG150 - Split and aggregation are not possible in the same structure

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 150

• Message text: Split and aggregation are not possible in the same structure

What causes this issue?

Certain restrictions have been determined in DMC development. It does
not make sense to use split and aggregation together, so this is not
permitted.

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 DMCLG150 - Split and aggregation are not possible in the same structure ?

  The SAP error message DMCLG150, which states "Split and aggregation are not possible in the same structure," typically occurs in the context of data modeling or data processing within SAP BW (Business Warehouse) or SAP HANA environments. This error indicates that there is a conflict in the data processing logic where both splitting and aggregation operations are being attempted on the same data structure, which is not allowed.
  Cause:
  
  
  Data Model Configuration: The error often arises when a data model is configured to perform both split and aggregation operations on the same data structure. For example, if you are trying to aggregate data while simultaneously trying to split it into different segments or categories, the system cannot process both actions at the same time.
  
  
  Transformation Logic: In the transformation rules, if you have defined a logic that attempts to aggregate data while also trying to split it into different dimensions or hierarchies, this conflict will trigger the error.
  
  
  Incompatible Data Sources: Sometimes, the data sources being used may not support both operations simultaneously, leading to this error.
  
  
  Solution:
  
  
  Review Data Model: Check the data model configuration to ensure that you are not trying to perform both split and aggregation in the same structure. You may need to separate these operations into different data flows or processes.
  
  
  Adjust Transformation Rules: Go through the transformation rules and ensure that you are not mixing aggregation and splitting logic. If necessary, create separate transformations for aggregation and splitting.
  
  
  Use Separate Queries: If you need both aggregated and split data, consider creating separate queries or data flows. First, perform the aggregation in one query, and then use the results in another query where you can apply the split logic.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on how to structure your data models and transformations to avoid this error.
  
  
  Testing: After making changes, test the data flow to ensure that the error is resolved and that the data is processed as expected.
  
  
  Related Information:
  
  SAP BW/4HANA: If you are using SAP BW/4HANA, ensure that you are familiar with the new modeling capabilities and restrictions that may differ from previous versions of SAP BW.
  Data Flow Design: Understanding the principles of data flow design in SAP BW can help prevent such errors. Familiarize yourself with best practices for designing data models.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By addressing the configuration and transformation logic, you should be able to resolve the DMCLG150 error and successfully process your data.