How To Fix RSDD431 - '&2': Line item '&1' is used in aggregate

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD - Message class for data manager

• Message number: 431

• Message text: '&2': Line item '&1' is used in aggregate

What causes this issue?

The line item &v1& is used in aggregate '&v2&'.

System Response

If you are dealing with a line item that has many characteristic values,
the aggregate can become as large as the InfoCube. This means that there
is probably no advantage in having an aggregate in this case.
This message does not appear in the expert mode.

How to fix this error?

Check the number of characteristic values in the line item and delete
the line item from the aggregate, if including it means that the
aggregate is too large.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD431 - '&2': Line item '&1' is used in aggregate ?

  The SAP error message RSDD431 '&2': Line item '&1' is used in aggregate typically occurs in the context of SAP BW (Business Warehouse) when you are trying to delete or modify a characteristic or line item that is currently being used in an aggregate. This can happen during the process of data modeling or when managing InfoObjects, InfoCubes, or aggregates.
  Cause:
  
  Usage in Aggregates: The line item (characteristic) you are trying to modify or delete is part of an aggregate. Aggregates are pre-calculated summaries of data that improve query performance.
  Data Model Integrity: SAP BW enforces data model integrity, which means you cannot remove or change elements that are actively being used in aggregates to prevent inconsistencies in reporting and data retrieval.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Aggregate: Determine which aggregate is using the line item. You can do this by checking the aggregate definitions in the SAP BW system.
  
  
  Remove from Aggregate:
  
  Go to the aggregate maintenance transaction (e.g., RSA1).
  Locate the aggregate that includes the line item.
  Remove the line item from the aggregate definition.
  Save the changes.
  
  
  
  Rebuild the Aggregate: After removing the line item, you may need to rebuild the aggregate to ensure that it reflects the current data model. This can usually be done in the same maintenance transaction.
  
  
  Modify or Delete the Line Item: Once the line item is no longer part of any aggregate, you should be able to modify or delete it without encountering the error.
  
  
  Check Dependencies: If you are unsure about the dependencies, you can use the "Where-Used List" functionality in SAP to see where the line item is being used.
  
  
  Related Information:
  
  Transaction Codes: Common transaction codes related to aggregates and InfoObjects include RSA1 (Data Warehousing Workbench), RSD1 (InfoObject Maintenance), and RSD3 (Aggregate Maintenance).
  Documentation: Refer to SAP Help documentation for detailed guidance on managing aggregates and InfoObjects.
  Performance Considerations: Be cautious when modifying aggregates, as they are critical for performance optimization in reporting. Always ensure that changes are tested in a development environment before moving to production.
  
  By following these steps, you should be able to resolve the RSDD431 error and manage your SAP BW data model effectively.