How To Fix W8136 - Expression type & is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: W8 - Workflow: Expressions, data flow

• Message number: 136

• Message text: Expression type & is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W8136 - Expression type & is not supported ?

  SAP Error Message:
  
  W8136 Expression type & is not supported
  
  Cause
  This warning message occurs when an expression type used in an ABAP statement or condition is not supported by the particular context or statement where it is used. The placeholder & in the message is replaced by the actual expression type that is causing the issue.
  Common scenarios include:
  
  Using an unsupported data type or expression in a WHERE condition, FILTER, or other expressions.
  Using complex expressions or data types (e.g., internal tables, structures) where only simple types (e.g., elementary types) are allowed.
  Using expressions in CDS views or Open SQL statements that do not support certain ABAP expression types.
  Using expressions in newer ABAP syntax constructs that have restrictions on allowed expression types.
  
  
  Solution
  
  
  Identify the Expression Type:
  
  Check the exact expression type mentioned in the message (the & placeholder will be replaced by the actual type in your system). This will help you understand what kind of expression is not supported.
  
  
  Simplify the Expression:
  
  Modify the expression to use supported data types or simpler expressions. For example:
  
  Use elementary data types instead of structures or internal tables.
  Avoid complex expressions inside WHERE or FILTER clauses.
  Use explicit field references instead of expressions or method calls.
  
  
  
  Check the Context:
  
  Verify the context where the expression is used:
  
  In Open SQL, only certain expressions are allowed.
  In CDS views, only supported expressions and functions can be used.
  In FILTER or LOOP AT WHERE, only certain types of expressions are allowed.
  
  
  
  Use Intermediate Variables:
  
  If the expression is complex, assign it to an intermediate variable of a supported type before using it in the statement.
  
  
  Consult Documentation:
  
  Refer to the ABAP documentation for the specific statement or construct you are using to check which expression types are supported.
  
  
  
  Related Information
  
  
  SAP Note / Documentation:
  
  There might be SAP Notes related to this warning depending on the ABAP version and context. Check the SAP Support Portal for notes related to message class W8 and message number 136.
  
  
  ABAP Keyword Documentation:
  
  Review the documentation for the statement or expression you are using (e.g., Open SQL, FILTER, LOOP AT WHERE) to understand allowed expression types.
  
  
  ABAP Expression Types:
  
  Understanding the difference between elementary types, structures, internal tables, and references is crucial.
  
  
  Example:
  
  If you have something like:
  LOOP AT itab WHERE ( some_complex_expression ).
  And some_complex_expression is of a type not supported in the WHERE clause, you will get this warning.
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Unsupported expression type used in a statement or condition.
  
  
  Solution
  Simplify expression, use supported types, assign to intermediate variables if needed.
  
  
  Check
  ABAP documentation for allowed expression types in the specific context.
  
  
  Related
  ABAP expression types, Open SQL restrictions, CDS view expression limitations.
  
  
  
  
  If you provide the exact code snippet or the expression type shown in your system, I can help you with a more precise solution.