How To Fix OD421 - Error when reading USR01.

SAP Error Message - Details

• Message type: E = Error

• Message class: OD - IS-Oil: TSW Traders' and Schedulers' Workbench messages

• Message number: 421

• Message text: Error when reading USR01.

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 OD421 - Error when reading USR01. ?

  The SAP error message OD421, which indicates an issue when reading the USR01 table, typically relates to problems with user master records in the SAP system. The USR01 table contains user master data, and errors in accessing this table can arise from various causes.
  Causes of OD421 Error
  
  Database Issues: There may be issues with the database itself, such as corruption or connectivity problems.
  Authorization Problems: The user trying to access the data may not have the necessary authorizations to read from the USR01 table.
  User Master Record Issues: The specific user master record being accessed may be incomplete or corrupted.
  System Configuration: There may be configuration issues in the SAP system that affect how user data is accessed.
  Transport Issues: If recent transports were made that included user data, they may not have been executed correctly.
  
  Solutions to OD421 Error
  
  
  Check User Authorizations: Ensure that the user has the necessary authorizations to access the USR01 table. You can do this by checking the user's roles and profiles in transaction SU01 or SUIM.
  
  
  Database Consistency Check: Perform a consistency check on the database. You can use transaction DB02 to check for any inconsistencies or issues with the database.
  
  
  Review User Master Records: Check the specific user master record that is causing the error. You can do this in transaction SU01. Look for any missing or incorrect data.
  
  
  Check System Logs: Review the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  
  Transport Management: If the error occurred after a transport, check the transport logs for any errors. You may need to re-import the transport or correct any issues that arose during the transport process.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal. There may be specific notes addressing the OD421 error or related issues.
  
  
  System Restart: In some cases, a system restart may resolve temporary issues with database connections or locks.
  
  
  Related Information
  
  
  Transaction Codes: 
  
  SU01: User Maintenance
  SUIM: User Information System
  DB02: Database Performance Analysis
  SM21: System Log
  SE11: Data Dictionary (to view the structure of USR01)
  
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any relevant logs and the context in which the error occurs.
  
  
  Documentation: Review SAP documentation related to user management and database administration for best practices and troubleshooting steps.
  
  
  By following these steps, you should be able to diagnose and resolve the OD421 error effectively.