How To Fix 0H456 - Locked key fields must be output

SAP Error Message - Details

• Message type: E = Error

• Message class: 0H - Hierarchy module

• Message number: 456

• Message text: Locked key fields must be output

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 0H456 - Locked key fields must be output ?

  The SAP error message 0H456 ("Locked key fields must be output") typically occurs in the context of data extraction or reporting, particularly when using SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error indicates that certain key fields that are locked for output are not being included in the data extraction or report output.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Key Fields: The key fields that are required for the output are not included in the data extraction or report definition.
  Configuration Issues: There may be a configuration issue in the InfoObject or InfoProvider that is preventing the key fields from being output.
  Data Source Settings: The settings in the data source may not be correctly configured to include the necessary key fields.
  Authorization Issues: Sometimes, authorization settings may restrict access to certain key fields, leading to this error.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check the Data Extraction:
  
  Ensure that all required key fields are included in the data extraction or report definition. You may need to modify the query or data source to include these fields.
  
  
  
  Review InfoObject Settings:
  
  Go to the InfoObject settings in the SAP BW system and verify that the key fields are correctly defined and marked for output.
  
  
  
  Adjust Data Source Configuration:
  
  Check the configuration of the data source to ensure that it is set up to include the necessary key fields. You may need to adjust the settings to allow these fields to be output.
  
  
  
  Check Authorizations:
  
  Verify that the user has the necessary authorizations to access the key fields. If not, you may need to adjust the authorization roles.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of SAP you are using, as there may be additional considerations or known issues.
  
  
  
  Test the Changes:
  
  After making the necessary adjustments, test the data extraction or report again to see if the error persists.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to error 0H456, as there may be patches or updates that address this issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) and RSRT (Query Monitor) for troubleshooting.
  
  By following these steps, you should be able to identify and resolve the cause of the error message 0H456 in your SAP environment.