How To Fix WA855 - Events in event queue and transmission information deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 855

• Message text: Events in event queue and transmission information deleted

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WA855 - Events in event queue and transmission information deleted ?

  Certainly! Here's a detailed explanation regarding the SAP error message WA855 - Events in event queue and transmission information deleted:
  
  SAP Message: WA855
  Text: Events in event queue and transmission information deleted
  
  Cause
  This warning message occurs when the SAP system detects that there were events in the event queue and related transmission information that have been deleted. This situation typically arises due to one of the following reasons:
  
  Event queue overflow: The event queue has reached its maximum capacity, and older events are deleted to make room for new ones.
  Manual or automatic cleanup: Events and transmission information might have been deleted manually by an administrator or automatically by a system job or program.
  System restart or shutdown: During system shutdown or restart, the event queue might be cleared.
  Inconsistent or corrupted event queue: Sometimes, inconsistencies or corruption in the event queue can lead to deletion of events.
  Long processing delays: If events are not processed timely, they might be deleted after a certain retention period.
  
  
  Explanation
  In SAP, the event queue is used to manage asynchronous events that trigger certain processes or communication between different SAP components or external systems. When events or their transmission information are deleted, it means that some events that were supposed to be processed or transmitted are lost.
  This message is a warning (WA), not an error, indicating that the system has deleted some events to maintain stability or due to cleanup, but it may impact processes relying on those events.
  
  Solution / Actions to Take
  
  
  Check event queue size and parameters:
  
  Review the configuration of the event queue size and retention parameters.
  Increase the size of the event queue if it frequently overflows.
  Transaction codes like SMQ1 (Outbound Queue) and SMQ2 (Inbound Queue) can be used to monitor queues.
  
  
  
  Analyze system logs:
  
  Use transaction SM21 to check system logs for related messages or errors around the time the warning appeared.
  Look for any abnormal system shutdowns or restarts.
  
  
  
  Check for stuck or long-running events:
  
  Identify if there are events that are not being processed timely.
  Investigate and resolve any issues causing delays in event processing.
  
  
  
  Review and adjust cleanup jobs:
  
  Check if there are background jobs or programs that clean up event queues or transmission information.
  Adjust their frequency or parameters to avoid premature deletion.
  
  
  
  Monitor and optimize event processing:
  
  Ensure that the processes consuming events are running correctly.
  Fix any errors in event processing programs or communication links.
  
  
  
  SAP Notes and Support:
  
  Search for relevant SAP Notes for your SAP version that might address known issues with event queue handling.
  If the problem persists or impacts business processes, consider raising a support ticket with SAP.
  
  
  
  
  Related Information
  
  
  Transactions:
  
  SMQ1 - Outbound Queue Monitor
  SMQ2 - Inbound Queue Monitor
  SM21 - System Log
  SWEQADM - Event Queue Administration
  
  
  
  SAP Documentation:
  
  Event queue management and troubleshooting guides.
  SAP Help Portal sections on ALE/IDoc and event processing.
  
  
  
  Common scenarios:
  
  ALE/IDoc communication issues.
  Workflow or event-driven process interruptions.
  System performance or stability problems related to event handling.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  WA855 - Events in event queue and transmission information deleted
  
  
  Cause
  Event queue overflow, manual/automatic deletion, system restart, or processing delays
  
  
  Effect
  Some events and transmission info lost, possible impact on asynchronous processes
  
  
  Solution
  Check queue size, monitor and optimize event processing, review cleanup jobs, check logs
  
  
  Tools
  SMQ1, SMQ2, SM21, SWEQADM
  
  
  
  
  If you provide more context (e.g., when the message appears, system version, related processes), I can help tailor the solution further.