How To Fix SWF_RLS_001150 - Operator '&1' expects an internal table for expression '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_RLS_001 - Condition Evaluation and Rule Evaluation

• Message number: 150

• Message text: Operator '&1' expects an internal table 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_001150 - Operator '&1' expects an internal table for expression '&2' ?

  The SAP error message SWF_RLS_001150 indicates that there is an issue with the operator expecting an internal table for a specific expression. This error typically occurs in the context of workflow or business process management within SAP, particularly when dealing with expressions in workflow rules.
  Cause:
  The error is caused by a mismatch between the expected data type and the actual data type being provided in a workflow rule or expression. Specifically, the operator (e.g., a function or method) is expecting an internal table (a type of data structure in ABAP that can hold multiple records), but it is receiving a different type of data (like a single value or a different structure).
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Expression: Review the expression that is causing the error. Ensure that it is correctly defined and that it is indeed supposed to return an internal table.
  
  
  Data Type Verification: Verify the data types of the variables or expressions involved. Make sure that the variable you are passing to the operator is an internal table. If it is not, you may need to modify the expression or the data being passed.
  
  
  Modify the Workflow Rule: If you are using a workflow rule, you may need to adjust the rule to ensure that it correctly handles the data types. This might involve changing how data is fetched or processed.
  
  
  Debugging: If you have access to debugging tools, you can set breakpoints and inspect the values being passed to the operator. This can help you identify where the mismatch is occurring.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for the specific operator you are using. This can provide insights into the expected input types and how to format your data correctly.
  
  
  Testing: After making changes, test the workflow or process to ensure that the error is resolved and that the expected behavior is achieved.
  
  
  Related Information:
  
  Internal Tables in ABAP: Internal tables are a fundamental data structure in ABAP used to store multiple records. Understanding how to work with internal tables is crucial for resolving this error.
  Workflow Configuration: Familiarize yourself with the configuration of workflows in SAP, as this error often arises in that context.
  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.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.