How To Fix RSAN_WB102 - Deleting the field assignment for unknown source field &1...

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAN_WB - Messages for Analysis Designer

• Message number: 102

• Message text: Deleting the field assignment for unknown source field &1...

What causes this issue?

A field assignment exists for the source field &V1&. However, this
field is not found in the source structure.
This status can occur when fields have been deleted from the source
structure (because the query definition has been changed).

System Response

The system deletes the invalid field assignment.

How to fix this error?

Leave the dialog box for field assignment maintenance by confirming it
and save the corrected field assignments.

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 RSAN_WB102 - Deleting the field assignment for unknown source field &1... ?

  The SAP error message RSAN_WB102, which states "Deleting the field assignment for unknown source field &1," typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with field assignments in a DataSource or InfoObject. This error indicates that the system is trying to delete a field assignment for a source field that it cannot recognize or find.
  Cause:
  
  Missing DataSource: The DataSource from which the field is supposed to be coming may have been deleted or is not active.
  Field Renaming: The source field may have been renamed or removed in the source system, leading to a mismatch in the field assignments.
  Transport Issues: If the DataSource or InfoObject was transported from one system to another, there may have been issues during the transport process that caused the field assignments to become inconsistent.
  Inconsistent Metadata: There may be inconsistencies in the metadata definitions between the source system and the BW system.
  
  Solution:
  
  Check DataSource: Verify that the DataSource is active and that the field in question exists in the source system. You can do this by checking the DataSource in the SAP BW system.
  Update Field Assignments: If the field has been renamed or removed, update the field assignments in the InfoObject or DataSource to reflect the current structure of the source system.
  Recreate DataSource: If the DataSource is corrupted or has issues, consider recreating it or re-importing it from the source system.
  Transport Check: If the issue arose after a transport, check the transport logs for any errors and ensure that all necessary objects were transported correctly.
  Consistency Check: Run consistency checks in the BW system to identify and resolve any inconsistencies in the metadata.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to manage DataSources and InfoObjects.
  SAP Notes: Check SAP Notes related to this error message for any specific patches or updates that may address the issue.
  Documentation: Review SAP documentation on DataSources and InfoObjects for best practices in managing field assignments.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW team for further investigation, as they may have access to additional tools and logs that can help diagnose the issue.