Report Ignored PREFERRED PARAMETER When Non-Optional Parameters Exist

WarningClean ABAP & Modern Syntax#EC NO_IGN_PREF_PARAMRemote Enabled✏️ Edit Rule on GitHub

Overview

Report ignored PREFERRED PARAMETER addition.

ATC Finding Message: PREFERRED PARAMETER is ignored when mandatory parameters exist

Rationale

In ABAP methods, PREFERRED PARAMETER specifies the default importing parameter for positional calls. However, according to SAP ABAP rules, PREFERRED PARAMETER is ignored if there are any mandatory (non-optional) importing parameters in the signature. Such declarations mislead developers into assuming positional calls will work when in fact they are invalid or ignored.

Non-Compliant

METHODS get_data
  IMPORTING
    iv_req TYPE i
    iv_opt TYPE i OPTIONAL
  PREFERRED PARAMETER iv_req.

Compliant

METHODS get_data
  IMPORTING
    iv_req TYPE i
    iv_opt TYPE i OPTIONAL.

Suppression

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

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

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

Related Rules

• Declare OPTIONAL and DEFAULT Parameters Last — #EC PREF_OPTIONAL_LAST
• Limit Method Parameter Count and Keep One Parameter per Line — #EC MAX_PARAMS_COUNT

Technical Details

• Native ATC Class: /SKYL/CL_NO_IGN_PREF_PARAM
• ABAP Implementation: /skyl/cl_no_ign_pref_param.clas.abap
• Rule Metadata: rules-data.mjs (Line 5989)

Community & Feedback

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