How To Fix T0902 - A system error occurred when blocking the transaction

SAP Error Message - Details

• Message type: E = Error

• Message class: T0 - General Treasury

• Message number: 902

• Message text: A system error occurred when blocking the transaction

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message T0902 - A system error occurred when blocking the transaction ?

  The SAP error message T0902, which states "A system error occurred when blocking the transaction," typically indicates that there is an issue with the transaction processing in the SAP system. This error can arise from various underlying causes, and addressing it may require different approaches depending on the specific situation. Here are some common causes, potential solutions, and related information:
  Causes:
  
  Database Lock Issues: The error may occur if there are issues with database locks, such as deadlocks or contention for resources.
  System Configuration: Incorrect configuration settings in the SAP system can lead to transaction blocking errors.
  User Authorizations: Insufficient user authorizations may prevent the transaction from being processed correctly.
  System Performance: High system load or performance issues can lead to timeouts or failures in processing transactions.
  Software Bugs: There may be bugs in the SAP software or specific transaction codes that lead to this error.
  
  Solutions:
  
  Check System Logs: Review the system logs (transaction SM21) for any related error messages or warnings that could provide more context about the issue.
  Transaction Monitoring: Use transaction SM12 to check for any locked entries in the database. If there are unnecessary locks, they can be released.
  User Authorizations: Verify that the user has the necessary authorizations to perform the transaction. Use transaction SU53 to check for authorization issues.
  Performance Monitoring: Monitor system performance using transaction ST22 (dump analysis) and ST03N (workload analysis) to identify any performance bottlenecks.
  System Configuration: Review the configuration settings related to the transaction and ensure they are set up correctly.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues related to this error message. Applying patches or updates may resolve the issue.
  Restart the Transaction: Sometimes, simply restarting the transaction or logging out and back into the system can resolve transient issues.
  
  Related Information:
  
  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 transaction codes, user IDs, and any relevant logs.
  Documentation: Refer to SAP documentation for specific transaction codes and their expected behavior, as well as troubleshooting guides for common errors.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and potentially resolve the T0902 error in your SAP system.