How To Fix SWF_EXP_001074 - In expression '&1' a table was expected for component '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 074

• Message text: In expression '&1' a table was expected for component '&2'

What causes this issue?

A single row value was determined for component &V2& when evaluating a
(part) expression &V1&.
However, only a multirow value (an internal table) can be processed
here.

System Response

The expression evaluation was canceled.

How to fix this error?

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

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_EXP_001074 - In expression '&1' a table was expected for component '&2' ?

  The SAP error message SWF_EXP_001074 indicates that in a specific expression, a table was expected for a certain component, but something else was provided instead. This error typically arises in the context of workflow or business process management within SAP, particularly when dealing with expressions in workflows or task definitions.
  Cause:
  
  Incorrect Data Type: The most common cause of this error is that the expression is trying to access a component that is expected to be a table (internal table) but is instead receiving a different data type (like a single value or a structure).
  Misconfiguration: There may be a misconfiguration in the workflow or task definition where the expected data structure does not match the actual data being passed.
  Programming Error: If custom code is involved, there might be a programming error where the wrong variable type is being used in the expression.
  
  Solution:
  
  Check Data Types: Review the expression in question and ensure that the component being referenced is indeed a table. You can do this by checking the data dictionary or the relevant ABAP code.
  Modify the Expression: If the expression is incorrect, modify it to ensure that it references the correct data type. If a table is expected, ensure that the variable being used is defined as a table in the ABAP Dictionary.
  Debugging: If you have access to the workflow or the ABAP code, use debugging tools to trace the execution and see what data is being passed at runtime. This can help identify where the mismatch is occurring.
  Consult Documentation: Review SAP documentation or help resources related to workflows and expressions to ensure that you are using the correct syntax and data types.
  Check Workflow Configuration: If the error is occurring in a workflow, check the configuration of the workflow to ensure that all components are correctly defined and that the expected data types match.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, SAP releases notes that provide specific fixes or workarounds.
  Community Forums: SAP Community and other forums can be helpful to see if other users have encountered the same issue and what solutions they found.
  ABAP Development: If you are familiar with ABAP, reviewing the code where the error occurs can provide insights into the data types being used and help you correct the issue.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team or a consultant with expertise in SAP workflows for further assistance.