SAP Tips & Articles

Latest insights and technical solutions from the ABAP, Fiori and S/4HANA world.

Expense report approval flow with header and items built in RAP

4 October 2026 · 25 min

RAP Project Example: An Expense Report App with Header and Items

A small but complete RAP project from object list to preview: composition, a total calculated from items, submit and reject with a parameter, side effects, the screen via metadata extensions, child authorization and test scenarios.

Developing a business object with SAP RAP

3 October 2026 · 18 min

SAP RAP Guide: One Business Object from Table to Fiori App

Choosing managed/unmanaged and draft, behavior definitions, determinations, validations, actions, feature control, projection, authorization and EML — end to end with a draft-enabled leave request.

SAP integration scenarios and system-to-system connections

3 October 2026 · 16 min

SAP Integration Scenarios: IDoc, RFC, OData, REST and Events — Which One When?

The synchronous/asynchronous decision, using IDocs and BAPIs, calling external APIs from ABAP, RAP business events, the middleware decision, error handling and monitoring — with code examples.

Fiori Elements and Freestyle SAPUI5 interface comparison

2 October 2026 · 12 min

Fiori Elements or Freestyle SAPUI5? Choosing the Right Approach

Describing screens with CDS annotations, Fiori Elements extension points, the Flexible Programming Model as the middle path, a side-by-side comparison and the questions to ask — with code examples.

ABAP Cloud and clean core layered development model

19 September 2026 · 21 min

ABAP Cloud and Clean Core: A Guide to Modification-Free S/4HANA Development

Three-tier extensibility, what ABAP Cloud closes off and what replaces it, release contracts, the Tier 2 wrapper pattern and measuring custom code with ATC — with code examples.

19 September 2026 · 14 min

Writing Tests with ABAP Unit: Designing Testable ABAP

Test class anatomy, dependency injection, the ABAP Test Double Framework and Open SQL/CDS test doubles. The real issue is not the tool — it is the design of the code.

14 June 2026 · 13 min

Financial Reporting with ACDOCA: The S/4HANA Universal Journal Guide

The heart of S/4HANA, ACDOCA. How it replaced BSEG/FAGLFLEXA and the totals tables, and how to write real-time financial reports with CDS Views — with code examples.

6 June 2026 · 12 min

SAP OData V4 Service: From SEGW to CDS

CDS View-based OData V4 instead of SEGW. Interface/Consumption View, Behavior Definition, UI Annotations and real code examples — step by step.

6 June 2026 · 10 min

SAP ECC to S/4HANA Migration Guide: 5 Critical Phases

Lessons from the field: Greenfield vs Brownfield, Custom Code analysis, ACDOCA/MATDOC data model, test strategy and go-live risks.

15 March 2026 · Turkish

Clean ABAP: Complete Style Guide

The complete SAP Clean ABAP style guide — 150+ rules and real code examples across 17 chapters. Currently available in Turkish; an English version is planned.

Read in Turkish