How To Fix SWF_EXP_001205 - Byte code contains invalid argument '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 205

• Message text: Byte code contains invalid argument '&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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_EXP_001205 - Byte code contains invalid argument '&1' ?

  The SAP error message SWF_EXP_001205, which states "Byte code contains invalid argument '&1'", typically occurs in the context of workflow or process management within SAP systems. This error indicates that there is an issue with the bytecode generated for a workflow, often due to an invalid or unexpected argument being passed.
  Causes:
  
  Invalid Workflow Definition: The workflow definition may contain errors, such as incorrect parameters or missing values.
  Corrupted Workflow: The workflow instance or its bytecode may be corrupted, leading to invalid arguments being referenced.
  Incompatible Changes: Changes made to the workflow or its components (like tasks or events) that are not compatible with the existing instances can lead to this error.
  Transport Issues: If the workflow was transported from one system to another, there may be inconsistencies or missing components in the target system.
  
  Solutions:
  
  Check Workflow Definition: Review the workflow definition for any inconsistencies or errors. Ensure that all parameters and arguments are correctly defined.
  Rebuild Workflow: If the workflow is corrupted, consider rebuilding it or reactivating it. This can often resolve issues with bytecode.
  Check for Changes: If there have been recent changes to the workflow or its components, verify that these changes are compatible with existing instances.
  Transport Validation: If the workflow was transported, ensure that all necessary components were included in the transport request and that they are correctly configured in the target system.
  Debugging: Use the workflow log and debugging tools to trace the execution of the workflow and identify where the invalid argument is being generated.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error.
  
  Related Information:
  
  Workflow Logs: Access the workflow logs to get more detailed information about the error and the context in which it occurred.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SWI1 (Work Item Selection) and SWI2_FREQ (Work Item Selection for Recurrent Work Items) to monitor and manage workflows.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support for further assistance.