How To Fix WA864 - Select an entry in the event queue

SAP Error Message - Details

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 864

• Message text: Select an entry in the event queue

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 WA864 - Select an entry in the event queue ?

  Certainly! Here's detailed information about the SAP error message WA864 - "Select an entry in the event queue":
  
  SAP Error Message: WA864 - "Select an entry in the event queue"
  
  Cause:
  The error message WA864 typically occurs when a user or a program tries to process or handle an event, but no event has been selected from the event queue. In SAP, the event queue holds events that are waiting to be processed, and certain transactions or programs require the user to explicitly select an event from this queue before proceeding.
  This message usually appears in scenarios involving:
  
  Event handling in batch input sessions.
  Processing of workflow or event-driven transactions.
  When a user interface or program expects an event selection but none has been made.
  
  In other words, the system expects the user or program to select an event from a list or queue, but this selection was not done, causing the error.
  
  Solution:
  To resolve the WA864 error, you should:
  
  
  Select an Event:
  
  When prompted, ensure that you select an event from the event queue before proceeding.
  If you are running a program or transaction that processes events, make sure the event selection step is completed.
  
  
  
  Check the Program Logic:
  
  If this error occurs during custom development or batch input processing, verify that the code correctly handles event selection.
  Ensure that the event queue is not empty and that the program logic includes a step to select or process an event.
  
  
  
  Review Event Queue Status:
  
  Use transaction codes like SMQ1 (Outbound Queue) or SMQ2 (Inbound Queue) to check the status of queues if the error relates to queued events.
  Clear or process stuck events if necessary.
  
  
  
  Debugging:
  
  If the error occurs in a custom program, debug to check why no event is selected.
  Verify that the event queue is populated and that the selection mechanism is working as intended.
  
  
  
  
  Related Information:
  
  
  Event Queue in SAP: SAP uses event queues to manage asynchronous processing of events. Events can be system-generated or user-triggered and are stored temporarily in queues until processed.
  
  
  Common Transactions:
  
  SMQ1 / SMQ2: Monitor and manage outbound/inbound queues.
  SWI1: Display workflow logs and events.
  SM37: Check background jobs that might be related to event processing.
  
  
  
  SAP Notes and Documentation:
  
  Check SAP Notes related to event queue processing if the problem persists.
  Review SAP Help Portal documentation on event handling and batch input processing.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WA864 - Select an entry in the event queue
  
  
  Cause
  No event selected from the event queue when required
  
  
  Solution
  Select an event before proceeding; check program logic and event queue status
  
  
  Related TCodes
  SMQ1, SMQ2, SWI1, SM37
  
  
  
  
  If you provide the context or transaction where this error occurs, I can give more specific guidance.