Avoid Classic List Processing Statements

WarningAnti-Patterns & Bad Practices#EC NO_LIST_PROCRemote Enabled

Overview

Prohibit classic list processing statements.

ATC Finding Message: List processing statement is forbidden in OO/Cloud ABAP

Rationale

Classic list processing with WRITE, ULINE, FORMAT, and READ LINE only works in SAP GUI list reports and is unavailable in ABAP Cloud. It couples business logic to screen output and makes the code impossible to test independently. Use application logging or a modern UI framework instead of writing directly to a list.

Non-Compliant

WRITE / 'Order processed:'.
ULINE.

Compliant

mo_logger->info( 'Order processed:' ).

Configuration & Thresholds

This check can be fine-tuned directly in the ATC Check Variant Editor (CHKV) in Eclipse ADT:

Parameter Name	Data Type	Default Value	Description & Guidance
CHECK_WRITE	Boolean	true	Detect classic list processing WRITE statements
CHECK_ULINE	Boolean	true	Detect classic ULINE statements
CHECK_SKIP	Boolean	true	Detect classic SKIP statements
CHECK_OTHER	Boolean	true	Detect BACK, FORMAT, and classic print formatting statements
IGN_WRITE_TO	Boolean	true	Ignore WRITE ... TO ... string formatting statements (use string templates instead)
CHECK_LEAVE	Boolean	true	Detect LEAVE LIST-PROCESSING statements
CHECK_REJECT	Boolean	true	Detect REJECT statements in logical databases

Suppression

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

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

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

Related Rules

• Avoid Obsolete Arithmetic and Assignment Statements — #EC NO_OBS_ARITH
• Avoid Obsolete Control Flow and Procedural Forms — #EC NO_OBS_CONTROL
• Avoid Obsolete Declarations and Table Headers — #EC NO_OBS_DECL

Technical Details

• Native ATC Class: ZCL_SKYLINT_NO_LIST_PROC
• Implementation File: zcl_skylint_no_list_proc.clas.abap