How To Fix WTY800 - Several IDocs were transferred simultaneously to processing program

SAP Error Message - Details

• Message type: E = Error

• Message class: WTY - Warranty processing

• Message number: 800

• Message text: Several IDocs were transferred simultaneously to processing program

Self-Explanatory Message

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• What is the cause and solution for SAP error message WTY800 - Several IDocs were transferred simultaneously to processing program ?

  SAP Error Message:
  
  WTY800 - Several IDocs were transferred simultaneously to processing program
  
  Cause:
  The error message WTY800 occurs when multiple IDocs are transferred simultaneously to the same processing program instance, which is not allowed. This typically happens because the IDoc processing program (function module or report) is not designed to handle parallel processing of multiple IDocs at the same time, or the system tries to process several IDocs in parallel in a way that conflicts with the program's logic or locking mechanism.
  In other words, the processing program expects to handle IDocs sequentially, but due to system configuration or runtime conditions, multiple IDocs are being passed to it simultaneously, causing this error.
  
  Explanation:
  
  IDocs are processed by a function module or a report that reads the IDoc data and updates the application accordingly.
  The processing program might have a lock or expects exclusive access to certain resources.
  When multiple IDocs are passed simultaneously, the program detects this and raises WTY800 to prevent inconsistent processing or data corruption.
  
  
  Common Scenarios:
  
  Parallel processing of IDocs is enabled but the processing function module is not designed for it.
  Custom IDoc processing programs that do not handle concurrency properly.
  Incorrect partner profile or port configuration causing multiple IDocs to be triggered at the same time.
  Background jobs or ALE distribution configured to process IDocs in parallel without proper synchronization.
  
  
  Solution:
  
  
  Check the Processing Program:
  
  Verify if the standard or custom IDoc processing function module/report supports parallel processing.
  If it is a custom program, modify it to handle concurrency properly or serialize the processing.
  
  
  
  Adjust Partner Profile Settings:
  
  In transaction WE20, check the partner profile settings.
  Under the outbound parameters, check the processing mode.
  If parallel processing is enabled, consider switching to sequential processing to avoid simultaneous calls.
  
  
  
  Control Parallel Processing:
  
  Use transaction WE42 to check the process code and the associated function module.
  Ensure the function module is designed to handle multiple IDocs or restrict processing to one IDoc at a time.
  
  
  
  Use Queued Processing:
  
  Configure the IDoc processing to use queued processing (transaction WE21 for ports and WE20 for partner profiles).
  Queued processing ensures IDocs are processed one after another, avoiding simultaneous processing.
  
  
  
  Check Background Jobs:
  
  If IDocs are processed via background jobs (e.g., report RSEOUT00 or RBDAPP01), ensure jobs are scheduled to avoid overlapping runs.
  
  
  
  Locking Mechanism:
  
  Implement or check locking mechanisms in custom processing programs to prevent simultaneous processing.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  WE02 / WE05 - Display IDocs and their status.
  WE20 - Partner profiles.
  WE42 - Process codes.
  WE21 - Ports.
  SM37 - Background job monitoring.
  SM12 - Lock entries.
  
  
  
  Notes and Documentation:
  
  SAP OSS Notes related to WTY800 may provide specific fixes or patches.
  Review SAP documentation on IDoc processing and ALE configuration.
  
  
  
  Best Practices:
  
  Always test custom IDoc processing programs for concurrency.
  Use standard SAP function modules for IDoc processing when possible.
  Monitor IDoc processing queues and logs regularly.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Multiple IDocs sent simultaneously to a processing program that expects sequential input.
  
  
  Effect
  Processing program raises WTY800 error to prevent concurrent processing conflicts.
  
  
  Solution
  Adjust partner profile to sequential processing, use queued processing, or fix program concurrency.
  
  
  Tools
  WE20, WE42, WE21, WE02/WE05, SM37, SM12
  
  
  
  
  If you provide more details about your system setup or customizations, I can help tailor the solution further.