How To Fix SWF_EXP_001206 - Byte code contains invalid access command '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 206

• Message text: Byte code contains invalid access command '&1'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_EXP_001206 - Byte code contains invalid access command '&1' ?

  The SAP error message SWF_EXP_001206 indicates that there is an issue with the bytecode in a workflow. Specifically, the error message states that the bytecode contains an invalid access command, which is represented by the placeholder &1. This typically occurs when there is a problem with the workflow definition or the underlying logic that has been implemented.
  Cause
  The error can be caused by several factors, including:
  
  Corrupted Workflow Definition: The workflow definition may have been corrupted or improperly modified.
  Invalid Access Command: The bytecode may contain commands that are not recognized or are incorrectly formatted.
  Version Mismatch: There may be a mismatch between the workflow version and the system version, leading to compatibility issues.
  Transport Issues: If the workflow was transported from one system to another, it may not have been transported correctly, leading to inconsistencies.
  
  Solution
  To resolve the error, you can take the following steps:
  
  
  Check Workflow Definition:
  
  Open the workflow in the SAP Business Workflow Builder (transaction code SWDD) and verify that the workflow definition is correct and complete.
  Look for any inconsistencies or errors in the workflow steps.
  
  
  
  Rebuild the Workflow:
  
  If the workflow definition appears to be corrupted, consider rebuilding it from scratch or restoring it from a backup if available.
  
  
  
  Check for Transport Issues:
  
  If the workflow was recently transported, check the transport logs for any errors or warnings.
  Ensure that all necessary objects related to the workflow have been transported correctly.
  
  
  
  Activate the Workflow:
  
  After making any changes, ensure that you activate the workflow definition again. This can sometimes resolve issues related to bytecode.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest patches and updates, as there may be fixes related to workflow processing in newer versions.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message. There may be known issues and recommended solutions.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can try to debug the workflow to identify the exact point of failure.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information
  
  Transaction Codes: 
  
  SWDD - Workflow Builder
  SWI1 - Work Item Selection
  SWI2_FREQ - Work Item Selection for Recurrent Tasks
  
  
  Documentation: Review the SAP documentation on workflows for best practices and troubleshooting tips.
  Community Forums: Check SAP Community forums for discussions related to similar issues, as other users may have encountered and resolved the same error.
  
  By following these steps, you should be able to identify and resolve the issue causing the SWF_EXP_001206 error in your SAP system.