How To Fix 28142 - Expression has incorrect length &1. Length &2 was expected

28142 - Overview

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 142

• Message text: Expression has incorrect length &1. Length &2 was expected

What causes this issue?

The length of the expression at the cursor is not correct. &V2&
characters are expected, but &V1& characters were found.

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?

Some language elements have a predefined length. Names for BOM items,
for example, must always be exactly 4 characters long. Correct your
entry.

Error message extract from SAP system. Copyright SAP SE.

28142 - Details

• The SAP error message "28142 Expression has incorrect length &1. Length &2 was expected" typically occurs in the context of ABAP programming when there is a mismatch between the expected length of a data object and the actual length being provided. This error can arise in various scenarios, such as when dealing with string operations, field assignments, or data type conversions.
  
  Cause:
  
  Data Type Mismatch: The most common cause is that the length of a variable or field does not match the expected length defined in the data dictionary or in the program logic.
  String Operations: When performing operations on strings, if the length of the string does not match the expected length, this error can occur.
  Field Assignments: Assigning a value to a field that has a different length than the source value can trigger this error.
  Function Module or Method Calls: If a function module or method expects a parameter of a certain