Eliminate Unused Local Variables and Symbols

WarningAnti-Patterns & Bad Practices#EC NO_UNUSED_VARSRemote Enabled

Overview

Detect unused local variables and field symbols.

ATC Finding Message: Local variable or field symbol is declared but never read

Rationale

An unused variable or field symbol adds noise and suggests incomplete refactoring or a missing assignment. It keeps dead objects alive longer than necessary and makes reviews harder. Remove the declaration, or mark it with ##NEEDED when an external contract requires it.

Non-Compliant

DATA lv_message TYPE string.
process_order( ).

Compliant

DATA lv_message TYPE string.
lv_message = |Order { lv_id }|.
log_message( lv_message ).

Suppression

To suppress findings for this rule, append the pseudo-comment to the statement:

" Standard pseudo-comment:
... "#EC NO_UNUSED_VARS

" SAP CI_ prefix format:
... "#EC CI_NO_UNUSED_VARS

Related Rules

• Enforce Local Variable and Field-Symbol Naming Conventions — #EC PREF_NAMING_VARS
• Avoid Local Variables Shadowing Class Attributes — #EC NO_SHADOW
• Require Fully Typed Variables and Parameters — #EC PREF_FULL_TYPED

Technical Details

• Native ATC Class: ZCL_SKYLINT_NO_UNUSED_VARS
• Implementation File: zcl_skylint_no_unused_vars.clas.abap