How To Fix MCEX305 - Error while accessing queue &1 of application &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MCEX - Extraction Interface LIS/BW

• Message number: 305

• Message text: Error while accessing queue &1 of application &2

What causes this issue?

An attempt was made to set the queue name <(>&<)>V1&. This name is not
an authorized queue name.

System Response

Since the information about the queue name originates from the backup
table (MCEX_DELTA_BACK) itself, it is probable that the data in the
backup table has been damaged.

How to fix this error?

A reconstruction of the queue from the backup table is not possible. If
data is missing, you may need to construct the data again.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MCEX305 - Error while accessing queue &1 of application &2 ?

  The SAP error message MCEX305, which states "Error while accessing queue &1 of application &2," typically occurs in the context of the SAP system's message processing or queue management. This error can arise due to various reasons, including issues with the application queue, data inconsistencies, or system configuration problems.
  Causes:
  
  Queue Issues: The specified queue may be locked, inactive, or not properly configured.
  Data Inconsistencies: There may be inconsistencies in the data being processed, leading to access issues.
  Authorization Problems: The user or process attempting to access the queue may not have the necessary authorizations.
  System Configuration: Incorrect configuration settings in the application or the message processing system can lead to this error.
  Technical Issues: There may be underlying technical issues, such as database connectivity problems or system performance issues.
  
  Solutions:
  
  Check Queue Status: Verify the status of the specified queue. Ensure that it is active and not locked. You can use transaction codes like SMQ1 (for outbound queues) or SMQ2 (for inbound queues) to monitor queue statuses.
  Review Application Logs: Check the application logs for any additional error messages or warnings that may provide more context about the issue.
  Data Consistency Check: Ensure that the data being processed is consistent and valid. You may need to run consistency checks or data validation processes.
  Authorization Check: Verify that the user or process has the necessary authorizations to access the queue. You can check user roles and authorizations in transaction SU01.
  Configuration Review: Review the configuration settings for the application and the message processing system. Ensure that all settings are correct and aligned with the system requirements.
  System Performance: Monitor system performance and check for any bottlenecks or issues that may be affecting queue processing. You can use transaction ST22 for dumps or SM21 for system logs.
  Restart Queue Processing: In some cases, restarting the queue processing or the relevant application can resolve temporary issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SMQ1, SMQ2, SLG1 (Application Log), and ST22 (Dump Analysis).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the specific application or module you are working with, as it may contain specific guidelines for handling queue-related errors.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.