How To Fix S1164 - CUA buffer reset

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 164

• Message text: CUA buffer reset

What causes this issue?

The buffer of the CUA interfaces should be reset.
If this message appears again after confirmation, resetting was
successful.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message S1164 - CUA buffer reset ?

  The SAP error message S1164, which indicates a "CUA buffer reset," typically relates to issues with the Central User Administration (CUA) in SAP systems. This error can occur when there are inconsistencies or problems with the user data being synchronized across different systems in a CUA landscape.
  Cause:
  
  Inconsistent User Data: The user data in the central system may not match the data in the child systems, leading to synchronization issues.
  Network Issues: Temporary network problems can disrupt the communication between the central system and the child systems.
  Configuration Errors: Incorrect configuration settings in the CUA setup can lead to buffer resets.
  System Performance: High load or performance issues in the central or child systems can cause timeouts or failures in processing user data.
  
  Solution:
  
  Check User Data Consistency: Verify that the user data in the central system matches that in the child systems. You can use transaction codes like SU01 or SU10 to check user details.
  Reinitialize CUA Buffer: You can reset the CUA buffer by using transaction code SCUA in the central system. This will clear the buffer and allow for a fresh synchronization.
  Review CUA Configuration: Ensure that the CUA configuration is set up correctly. Check the settings in transaction SCUA and ensure that all child systems are correctly defined.
  Monitor Network Connectivity: Ensure that there are no network issues affecting communication between the central and child systems. Check for any firewalls or network configurations that might be causing disruptions.
  System Performance: Monitor the performance of both the central and child systems. If there are performance issues, consider optimizing the systems or scheduling user synchronization during off-peak hours.
  Check Logs: Review the system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  CUA Documentation: Refer to SAP's official documentation on Central User Administration for detailed configuration and troubleshooting steps.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to the S1164 error. You can search the SAP Support Portal for notes related to CUA and user administration.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.