How To Fix SWF_BND_001015 - Assignment to '&1' invalidates previous assignment to '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_BND_001 - Messages for workflow binding class

• Message number: 015

• Message text: Assignment to '&1' invalidates previous assignment to '&2'

What causes this issue?

The expression &V1& addresses a data object that was already accessed
using the expression &V2&. The previous expression has filled a sub-
component with a value. This subcomponent is now overwritten by the
assignment. The assignment made is invalidated as a result.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Remove one of the two assignments, or, if the assignment is part of the
subcomponent, swap the order of the assignments.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_BND_001015 - Assignment to '&1' invalidates previous assignment to '&2' ?

  The SAP error message SWF_BND_001015 indicates that there is an issue with the assignment of workflow binding elements in a workflow definition. Specifically, it means that the assignment to a variable (represented by &1) is invalidating a previous assignment to another variable (represented by &2). This typically occurs in the context of workflow definitions where multiple bindings are being set up, and there is a conflict or inconsistency in the assignments.
  Cause
  The error can occur due to several reasons:
  
  Conflicting Assignments: You may have multiple assignments to the same workflow variable, which can lead to conflicts.
  Incorrect Variable Types: The types of the variables being assigned may not be compatible, leading to invalid assignments.
  Scope Issues: The variable may be out of scope or not properly defined in the context of the workflow.
  Redundant Assignments: There may be redundant or unnecessary assignments that are causing confusion in the workflow logic.
  
  Solution
  To resolve the error, you can take the following steps:
  
  
  Review Workflow Bindings: Check the workflow definition for the bindings associated with the variables &1 and &2. Ensure that there are no conflicting assignments.
  
  
  Check Variable Types: Verify that the data types of the variables being assigned are compatible. If they are not, adjust the assignments accordingly.
  
  
  Eliminate Redundant Assignments: If there are multiple assignments to the same variable, consider consolidating them or removing unnecessary ones.
  
  
  Scope Verification: Ensure that the variables are correctly defined and are in the appropriate scope for the workflow. If a variable is defined in a different context, it may not be accessible.
  
  
  Debugging: Use the workflow debugging tools available in SAP to step through the workflow and identify where the conflict arises.
  
  
  Documentation: Refer to the SAP documentation for workflow management to understand the correct usage of variable assignments and bindings.
  
  
  Related Information
  
  Workflow Management: Understanding how workflows are structured and how variable bindings work is crucial. Familiarize yourself with the SAP Business Workflow documentation.
  Transaction Codes: You may use transaction codes like SWDD (Workflow Builder) to edit and review workflows.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error message.
  
  By following these steps, you should be able to identify and resolve the issue causing the SWF_BND_001015 error in your SAP workflow.