How To Fix MC842 - No active generalization for view &

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 842

• Message text: No active generalization for view &

What causes this issue?

It is not possible to transfer the attributes from the generalization
because the corresponding object in the ABAP/4 Dictionary could not be
found.

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?

It only makes sense to transfer the attribute for entity types of a
specialization.
It is also possible that it is a specialization, but no active view or
no active table was yet assigned to the generalization.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC842 - No active generalization for view & ?

  The SAP error message MC842 ("No active generalization for view &") typically occurs in the context of SAP's Logistics Information System (LIS) or when working with the Data Warehousing component. This error indicates that the system is unable to find an active generalization for the specified view, which is necessary for data extraction or reporting.
  Cause:
  
  Missing Generalization: The error usually arises when there is no active generalization defined for the specified view in the system. Generalizations are used to aggregate data at different levels, and if none are defined, the system cannot process the request.
  Inactive or Deleted Generalization: The generalization that was previously active may have been deleted or set to inactive.
  Configuration Issues: There may be issues with the configuration of the InfoObjects or InfoProviders related to the view in question.
  Transport Issues: If the system has recently undergone a transport of changes, it is possible that the generalization was not transported correctly.
  
  Solution:
  
  
  Check Generalization Settings:
  
  Go to the relevant transaction (e.g., RSA1 for Data Warehousing) and check the generalization settings for the view in question.
  Ensure that there is an active generalization for the view you are trying to access.
  
  
  
  Activate Generalization:
  
  If a generalization exists but is inactive, activate it. This can usually be done in the modeling tools of SAP BW or the relevant configuration area.
  
  
  
  Create a New Generalization:
  
  If no generalization exists, you may need to create a new one. This involves defining the aggregation levels and ensuring that the necessary InfoObjects are included.
  
  
  
  Check Transport Requests:
  
  If the issue arose after a transport, check the transport logs to ensure that all necessary objects were transported correctly. You may need to re-transport the generalization or related objects.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of SAP you are using, as there may be version-specific considerations or known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSD1 (InfoObject Maintenance), and others that may help in troubleshooting.
  SAP Notes: Search for SAP Notes related to error MC842 in the SAP Support Portal, as there may be specific fixes or recommendations provided by SAP.
  Documentation: Review the SAP Help Portal for detailed information on generalization and data modeling in SAP BW.
  
  By following these steps, you should be able to identify and resolve the cause of the MC842 error in your SAP system.