Description

Introduction

The ABAP RESTful Application Programming Model (RAP) represents the next-generation framework for building cloud-ready, scalable, and maintainable applications on the SAP Business Technology Platform (BTP) and S/4HANA.
RAP provides a unified programming model for developing end-to-end business applications — from the data model and business logic to the service exposure — using Core Data Services (CDS), Behavior Definitions, and OData services.
This training equips participants with the knowledge to design, implement, and manage applications based on RAP, enabling them to build efficient, modern, and RESTful applications using ABAP in on-premise and cloud environments.

Prerequisites

Participants should have:

• Proficiency in ABAP programming and Open SQL

• Basic understanding of CDS views, AMDP, and OData services

• Familiarity with Eclipse-based ABAP Development Tools (ADT)

• Understanding of SAP HANA concepts and S/4HANA architecture

Table of Contents

1. Introduction to ABAP RAP
1.1 Evolution of ABAP programming models (Classic, BOPF, and RAP)
1.2 Key components and architecture of RAP
1.3 Advantages of RAP over traditional ABAP programming models
1.4 RAP use cases in on-premise and cloud scenarios

2. RAP Architecture and Layers
2.1 Overview of RAP architecture
2.2 Data modeling, behavior definition, and service provisioning layers
2.3 Understanding BO (Business Object) and transactional models
2.4 Interaction between CDS, behavior pool, and service binding

3. RAP Development Environment
3.1 Setting up RAP development using ABAP Development Tools (ADT)
3.2 Project setup and namespace structure
3.3 Integration with SAP BTP and S/4HANA systems

4. Data Modeling with CDS in RAP
4.1 Defining CDS data models for RAP
4.2 Creating root and child entities
4.3 Using annotations for data exposure and metadata
4.4 Association and composition in CDS for RAP

5. Behavior Definition and Implementation
5.1 Introduction to behavior definition in RAP
5.2 Defining CRUD operations (Create, Read, Update, Delete)
5.3 Implementing behavior logic in behavior pools
5.4 Managing actions, validations, and determinations
5.5 Example: Defining behavior for a Purchase Order entity

6. Service Definition and Binding
6.1 Creating service definitions for RAP applications
6.2 Configuring OData V4 service bindings
6.3 Generating and testing RESTful APIs
6.4 Using SAP Gateway and Service Consumption models
6.5 Example: Exposing a CDS entity as a REST service

7. Business Object Processing and Transaction Handling
7.1 Working with managed and unmanaged business objects
7.2 Transactional processing in RAP
7.3 Handling draft-enabled applications
7.4 Managing save, modify, and commit operations

8. RAP Annotations and Metadata
8.1 Overview of RAP annotations
8.2 Using UI annotations for Fiori Elements integration
8.3 Implementing authorization and validation annotations
8.4 Analytical annotations for reporting
8.5 Example: Creating a Fiori-based UI using RAP annotations

9. Debugging, Testing, and Troubleshooting RAP Applications
9.1 Debugging RAP behavior implementations
9.2 Unit testing and integration testing in RAP
9.3 Common RAP errors and how to resolve them
9.4 Monitoring performance and data consistency

10. RAP in Cloud and On-Premise Environments
10.1 RAP in SAP S/4HANA Cloud vs. on-premise
10.2 Deployment options and transport mechanisms
10.3 Integration with SAP BTP and other services
10.4 Future direction of RAP in ABAP Cloud

11. Hands-on Exercises
11.1 Creating a RAP-based application with CDS and behavior definition
11.2 Implementing actions and validations in a managed BO
11.3 Generating an OData V4 service and testing it in SAP Gateway
11.4 Building a Fiori Elements UI on top of a RAP service

The ABAP RESTful Application Programming Model (RAP) training provides ABAP developers with the skills to build modern, RESTful, and service-oriented business applications optimized for SAP S/4HANA and the cloud.
Participants will learn to design end-to-end applications — from defining CDS-based data models and business logic to exposing APIs and building UI-integrated services.
By mastering RAP, developers can modernize existing applications, enhance performance, and prepare for ABAP Cloud development and future-ready enterprise solutions.