How To Fix W8353 - Operator '&1' cannot be applied to a multiline element

W8353 - Overview

• Message type: E = Error

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

• Message number: 353

• Message text: Operator '&1' cannot be applied to a multiline element

What causes this issue?

The existence operators 'EX' and 'NX' cannot be applied to a multiline
element, also when this multiline element only contains object
references.
Please note: The operators 'EX' and 'NX' are also not suitable for
checking the availability of a container element at runtime. They only
check whether an object reference that is already available in the
container refers to an official object available.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W8353 - Operator '&1' cannot be applied to a multiline element ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W8353 Operator '&1' cannot be applied to a multiline element
  
  
  Cause:
  This warning occurs when you try to use an operator (such as +, -, *, /, & (concatenation), or others) on a multiline element in a SAPscript or Smart Forms context. Multiline elements are typically text elements or variables that contain multiple lines of text, and certain operators cannot be directly applied to them.
  For example, in SAPscript or Smart Forms, if you try to concatenate (&) a multiline text element with another string or variable, the system raises this warning because the operator expects single-line elements or simple data types, not multiline text blocks.
  
  Typical Scenario:
  
  Using concatenation operator & on a multiline text element.
  Applying arithmetic or string operators on multiline text elements.
  Trying to manipulate text elements that span multiple lines directly in the code or form logic.
  
  
  
  Solution:
  
  
  Avoid applying operators directly on