How To Fix SWF_EXP_001220 - Token list is invalid (index '&1')

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 220

• Message text: Token list is invalid (index '&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.

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 SWF_EXP_001220 - Token list is invalid (index '&1') ?

  The SAP error message SWF_EXP_001220 indicates that there is an issue with the token list in a workflow. Specifically, the error message states that the token list is invalid at a certain index, which is represented by &1. This typically occurs in the context of SAP Business Workflow when the workflow engine encounters an unexpected state or configuration.
  Causes:
  
  Corrupted Workflow Definition: The workflow definition may be corrupted or improperly configured, leading to an invalid token list.
  Inconsistent Workflow Data: Changes made to the workflow or its associated objects (like tasks, events, or containers) may not have been properly synchronized, resulting in inconsistencies.
  Custom Code Issues: If there are custom enhancements or modifications in the workflow, they may not be handling tokens correctly.
  Database Issues: Problems with the underlying database, such as missing or inconsistent data, can also lead to this error.
  
  Solutions:
  
  Check Workflow Definition: Review the workflow definition in transaction SWDD (Workflow Builder) to ensure that it is correctly configured and that all necessary components are in place.
  Rebuild Workflow: If the workflow definition is corrupted, consider rebuilding it from scratch or restoring it from a backup if available.
  Check for Inconsistencies: Use transaction SWI1 (Work Item Selection) to check for any work items that may be in an inconsistent state and resolve them.
  Debug Custom Code: If there are custom enhancements, debug the code to ensure that it is correctly managing the workflow tokens.
  Check Workflow Logs: Use transaction SWI2_FREQ to analyze the workflow logs for any additional error messages or warnings that may provide more context about the issue.
  Database Consistency Check: Perform a consistency check on the database to ensure that all necessary data for the workflow is present and correct.
  
  Related Information:
  
  Transaction Codes:
  
  SWDD: Workflow Builder
  SWI1: Work Item Selection
  SWI2_FREQ: Workflow Log
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the SAP Business Workflow documentation for best practices in workflow design and management.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance, providing them with detailed information about the error and the steps taken to resolve it.