How To Fix W8220 - Expression &1: Invalid syntax for access to structure field

W8220 - Overview

• Message type: E = Error

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

• Message number: 220

• Message text: Expression &1: Invalid syntax for access to structure field

What causes this issue?

Expression &V1& has an invalid syntax. Use the following format to
access structure fields:
<Name of structure>-<Name of field>.
In your example, the valid syntax is &V2&-&V3&

System Response

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

How to fix this error?

Use the specified syntax or choose the structure field using the input
help.

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 W8220 - Expression &1: Invalid syntax for access to structure field ?

  SAP Error Message:
  W8220 Expression &1: Invalid syntax for access to structure field
  
  
  Cause:
  This warning message occurs when there is a syntax error in the expression used to access a field of a structure in ABAP code. Specifically, the syntax used to reference a structure field is incorrect or not allowed in the context where it appears.
  Common causes include:
  
  Using incorrect field access notation (e.g., missing - or -> for field access).
  Trying to access a component of a structure using a syntax meant for other data types.
  Using parentheses or other operators incorrectly when accessing structure fields.
  Accessing nested structure fields incorrectly.
  
  
  Explanation:
  In ABAP, to access a field of a structure, the correct syntax is:
  structure-field
  For example, if you have a structure ls_data with a field name, you access it as:
  ls_data-name
  If the syntax deviates from this, the system raises the warning W8220.
  
  
  Solution:
  
  
  Check the syntax of the field access expression.
  Make sure you use the correct hyphen - to