How To Fix SWF_RLS_001154 - Operator '&1' expects a structure type for expression '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_RLS_001 - Condition Evaluation and Rule Evaluation

• Message number: 154

• Message text: Operator '&1' expects a structure type for expression '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_RLS_001154 - Operator '&1' expects a structure type for expression '&2' ?

  The SAP error message SWF_RLS_001154 indicates that there is an issue with the data type being used in a workflow or a related process. Specifically, the error states that an operator (like a function or method) is expecting a structure type, but it is receiving a different type of data (like a simple data type or an incompatible structure).
  Cause:
  
  
  Data Type Mismatch: The most common cause of this error is that the operator is being provided with a variable or expression that is not of the expected structure type. This can happen if:
  
  A variable is incorrectly defined or initialized.
  The wrong data type is being passed to a function or method.
  There is a mismatch between the expected input type and the actual type being provided.
  
  
  
  Workflow Configuration Issues: If the error occurs in a workflow, it may be due to incorrect configuration of the workflow steps or the data being passed between them.
  
  
  Changes in Data Structures: If there have been recent changes to the data structures (like adding or removing fields), it may lead to this error if the workflow or function has not been updated accordingly.
  
  
  Solution:
  
  
  Check Data Types: Review the data types of the variables being used in the expression. Ensure that the variable being passed to the operator is indeed a structure type as expected.
  
  
  Review Workflow Configuration: If the error is occurring in a workflow, check the configuration of the workflow steps. Ensure that the correct data types are being used in each step and that the data is being passed correctly between steps.
  
  
  Debugging: Use debugging tools to trace the execution of the workflow or function. This can help identify where the data type mismatch is occurring.
  
  
  Update Structures: If there have been changes to the data structures, ensure that all related workflows and functions are updated to reflect these changes.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details about the operator and the expected data types.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: SAP Community forums can be a valuable resource for finding similar issues faced by other users and their solutions.
  Transaction Codes: Use transaction codes like SWI1 (Work Item Selection) or SWI2_FREQ (Work Items by Frequency) to analyze workflow instances and identify where the error is occurring.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.