How To Fix WER138 - Type &1 is not a structure type

WER138 - Overview

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 138

• Message text: Type &1 is not a structure type

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER138 - Type &1 is not a structure type ?

  SAP Error Message:
  WER138 Type &1 is not a structure type
  
  
  Cause:
  This error occurs when the ABAP program or dictionary object expects a structure type, but the specified type (&1 is a placeholder for the actual type name) is not defined as a structure. Instead, it might be a data element, domain, table type, or some other non-structure type.
  For example, if you try to declare a variable or use a type that is expected to be a structure (like in a TYPES or DATA statement) but the referenced type is a simple data element or a table type, the system raises this error.
  
  Typical Scenarios:
  
  Using a data element or domain where a structure type is required.
  Using a table type or elementary type instead of a structure.
  Incorrect type reference in TYPES, DATA, or FIELD-SYMBOLS declarations.
  Trying to access components of a type that is not a structure.
  
  
  
  Solution:
  
  
  Check the Type Definition:
  
  Go to transaction SE11 (Data Dictionary).
  Enter