How To Fix 01721 - Inout/output error reading a data record

SAP Error Message - Details

• Message type: E = Error

• Message class: 01 -

• Message number: 721

• Message text: Inout/output error reading a data record

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 01721 - Inout/output error reading a data record ?

  The SAP error message 01721, which states "Input/output error reading a data record," typically indicates that there is an issue with reading data from a database or a file. This error can occur in various contexts, such as during data retrieval, file processing, or database operations. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  File System Issues: The underlying file system may have issues, such as corruption or insufficient permissions.
  Database Corruption: The database may be corrupted, leading to read errors.
  Network Issues: If the data is being accessed over a network, network issues could cause read failures.
  Insufficient Resources: Lack of memory or disk space on the server can lead to input/output errors.
  Configuration Errors: Incorrect configuration settings in SAP or the database can lead to read errors.
  Hardware Failures: Issues with the hardware, such as a failing hard drive, can also cause this error.
  
  Solutions:
  
  Check File System: Verify the integrity of the file system. Use tools to check for and repair any file system errors.
  Database Check: Run database consistency checks (e.g., DBCC CHECKDB for SQL Server) to identify and repair any corruption.
  Network Diagnostics: If applicable, check the network connection and ensure that there are no interruptions or issues.
  Resource Monitoring: Monitor server resources (CPU, memory, disk space) to ensure that there are sufficient resources available.
  Review Configuration: Check the configuration settings in SAP and the database to ensure they are correct.
  Backup and Restore: If corruption is found, restore from a backup if available.
  Consult Logs: Review SAP application logs and system logs for more detailed error messages that can provide additional context.
  Contact Support: If the issue persists, consider reaching out to SAP support or your database administrator for further assistance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  System Logs: Use transaction codes like SM21 (System Log) and ST22 (Dump Analysis) to gather more information about the error.
  Database Logs: Review the database logs for any errors or warnings that may provide insight into the issue.
  Backup Strategy: Ensure that you have a robust backup strategy in place to prevent data loss in case of corruption.
  
  By following these steps, you should be able to diagnose and resolve the input/output error related to reading a data record in SAP.