How To Fix SWF_BND_001012 - Value of expression '&1' cannot be used as the target of an assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_BND_001 - Messages for workflow binding class

• Message number: 012

• Message text: Value of expression '&1' cannot be used as the target of an assignment

What causes this issue?

Expression &V1& refers to a data object that cannot be changed, for
example, a constant, a system field,
an object attribute, or a method that cannot
be changed. A binding cannot use this data object as a target.

System Response

The operation was canceled.

How to fix this error?

Change the binding operation in the workflow definition environment
(choose another target for the assignment in the binding editor), or
set the workflow parameters so that the binding operation can actually
include the required value.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_BND_001012 - Value of expression '&1' cannot be used as the target of an assignment ?

  The SAP error message SWF_BND_001012 indicates that there is an issue with an expression in a workflow binding. Specifically, it means that the value of the expression &1 cannot be used as the target of an assignment. This typically occurs in the context of workflow definitions where you are trying to assign a value to a variable or an expression that is not valid for assignment.
  Cause:
  
  
  Invalid Target: The expression you are trying to assign a value to is not a valid target. This could be due to:
  
  The target variable is read-only.
  The target variable is not defined correctly.
  The target variable is of a type that does not support assignment.
  
  
  
  Incorrect Binding: The binding might be incorrectly set up, leading to an attempt to assign a value to an expression that cannot accept it.
  
  
  Data Type Mismatch: There may be a mismatch between the data type of the value being assigned and the data type of the target variable.
  
  
  Solution:
  
  
  Check the Target Variable: Ensure that the target variable you are trying to assign a value to is defined correctly and is not read-only. Verify that it is a valid variable that can accept assignments.
  
  
  Review Workflow Binding: Go through the workflow binding settings to ensure that the expressions are set up correctly. Make sure that the binding is pointing to the correct variable.
  
  
  Data Type Verification: Check the data types of both the source and target variables. Ensure that they are compatible and that you are not trying to assign a value of one type to a variable of another incompatible type.
  
  
  Debugging: If the issue persists, consider using debugging tools available in SAP to trace the workflow execution and identify where the assignment is failing.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the workflow binding and variable assignments.
  
  
  Related Information:
  
  Workflow Configuration: Understanding how to configure workflows in SAP can help prevent such errors. Familiarize yourself with the workflow editor and binding options.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, specific versions of SAP may have bugs that are documented in SAP Notes.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.