How To Fix CX642 - No characteristic is assigned to key field &1 in database table &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CX - Nachrichten für Konfigurationsprozess

• Message number: 642

• Message text: No characteristic is assigned to key field &1 in database table &2

What causes this issue?

You can only transfer the contents of a variant table to a database
table if each key field in the database table is assigned to a
characteristic in the variant table.

System Response

The system found that no characteristic is assigned to field &V1& in
database table &V2&.

How to fix this error?

Check the interface between the variant table and the database table.

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 CX642 - No characteristic is assigned to key field &1 in database table &2 ?

  The SAP error message CX642 indicates that there is a problem with the assignment of characteristics to key fields in a database table. This typically occurs in the context of SAP BW (Business Warehouse) or when working with InfoObjects and data modeling.
  Cause:
  The error message "CX642 No characteristic is assigned to key field &1 in database table &2" usually arises due to one of the following reasons:
  
  
  Missing Assignment: A characteristic that is expected to be linked to a key field in a database table is not assigned. This can happen if the InfoObject has not been properly configured or if there are changes in the data model that have not been reflected in the database.
  
  
  Data Model Changes: If there have been recent changes to the data model, such as adding or removing characteristics, the system may not have updated the underlying database structure accordingly.
  
  
  Transport Issues: If the changes were transported from one system to another (e.g., from development to production), there may have been issues during the transport that caused the assignment to be lost.
  
  
  Inconsistent Data: There may be inconsistencies in the data that prevent the system from recognizing the relationship between the key field and the characteristic.
  
  
  Solution:
  To resolve the CX642 error, you can follow these steps:
  
  
  Check Characteristic Assignment:
  
  Go to the InfoObject maintenance transaction (e.g., RSD1) and check if the characteristic is correctly assigned to the key field in the relevant database table.
  Ensure that the characteristic is active and properly configured.
  
  
  
  Reassign Characteristics:
  
  If the assignment is missing, you may need to reassign the characteristic to the key field. This can be done in the InfoObject maintenance screen.
  
  
  
  Activate the InfoObject:
  
  After making changes, ensure that you activate the InfoObject. This will update the database structure and reflect the changes.
  
  
  
  Check for Transport Issues:
  
  If the issue arose after a transport, check the transport logs for any errors or warnings. You may need to re-transport the objects or manually adjust the assignments.
  
  
  
  Consistency Check:
  
  Run consistency checks in the BW system to identify any other potential issues with the data model. You can use transaction RSRV for this purpose.
  
  
  
  Database Table Check:
  
  If you have access to the database, you can check the underlying database table to ensure that the key fields and characteristics are correctly defined.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  RSD1: InfoObject maintenance
  RSRV: Consistency checks in BW
  
  
  Documentation: Refer to SAP Help documentation for detailed information on InfoObjects and data modeling in BW.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis or BW team for further investigation.