SAP ABAP Development Services
SAP ABAP development is the custom programming layer of an SAP system. Appsierra's senior ABAP engineers build and remediate it the modern way — the RESTful ABAP Programming Model (RAP), Core Data Services views and OData services for Fiori — as clean-core extensions that sit alongside S/4HANA rather than modifying it, so your core stays standard and your next upgrade stays low-risk.
Custom ABAP is how most SAP systems come to fit the business — and, done badly, how they become expensive to maintain and painful to upgrade. The old pattern of modifying the core and copying standard code into Z-programs is exactly what made ECC estates hard to move. Appsierra writes ABAP the way S/4HANA expects it: on the RESTful ABAP Programming Model, with CDS views for data and logic, exposed as OData for Fiori, and kept out of the digital core as clean-core extensions.
We also take on the less glamorous half of the work — remediating code you already have. Running the ABAP Test Cockpit against the S/4HANA checks, replacing obsolete statements, moving logic onto released APIs, and retiring Z-code nobody uses. Where the ABAP backs a user interface we build the SAP Fiori and UI5 apps that sit on top of it, and our QA practice proves the result rather than trusting it.
What the pod delivers
RAP & CDS development
New custom objects built on the RESTful ABAP Programming Model with Core Data Services views, so business logic is declarative, testable and upgrade-stable.
OData & Fiori backends
OData V2/V4 services that expose your data cleanly to SAPUI5 and Fiori front ends, with the service definitions and behaviours kept in released, supported patterns.
Clean-core extensibility
Enhancements built with BAdIs, released extension points and side-by-side apps on SAP BTP — not core modifications — so standard stays standard.
Custom-code remediation
Your existing Z-code assessed with the ABAP Test Cockpit against the S/4HANA checks, then fixed, modernised to released APIs or retired where it is dead.
How the engagement runs
Four steps from first call to a pod that is measurably working. You are never more than two weeks from evidence.
The stack we work in
We adopt your tools rather than imposing ours. These are the ones our engineers are already senior in.
What our SAP ABAP engineers build
Modern, upgrade-safe ABAP across new development, extensibility and remediation.
RAP applications
Transactional and analytical apps on the RESTful ABAP Programming Model — behaviour definitions, draft handling and OData exposure — rather than legacy BOPF or freestyle Z-programs.
CDS data models
Core Data Services views that push logic down to the HANA database, feed Fiori and analytics, and replace scattered SELECTs with a reusable, performant data layer.
Interfaces & enhancements
IDoc, proxy and OData interfaces, plus BAdI and enhancement-framework extensions that add behaviour at released extension points without touching standard code.
Reports, forms & workflows
ALV and CDS-based reports, Adobe and Smart Forms output, and SAP Business Workflow or Flexible Workflow where a process needs approval and routing.
Performance-safe code
ABAP written to avoid nested database reads and SELECTs in loops, with code pushdown to the HANA layer, so custom logic performs on large data rather than on a demo.
Automated tests
ABAP Unit tests and ATC quality gates built alongside the code, so a change can be re-verified in a pipeline rather than re-tested by hand each time.
How we work in your SAP system
In your transport landscape, to your standards, with quality built in.
In your landscape
We develop in ABAP Development Tools (ADT in Eclipse) within your development client, transport through quality to production via your TMS — never adjusting production directly.
To released APIs
New and remediated code targets released SAP APIs and extension points, which is what keeps it working across support packs and upgrades instead of breaking each cycle.
Reviewed and tested
A senior ABAP engineer reviews every object, ATC runs as a quality gate, and the functionality is tested end to end — because an extension that passes a syntax check can still post the wrong figure.
Documented and handed over
Objects, interfaces and extension points are documented and transferred to your team, so you are not dependent on us to maintain what we built.
Why engineering leaders choose Appsierra for SAP ABAP
Clean-core by default
We build extensions, not modifications, so the custom layer we add is the kind that survives your next S/4HANA upgrade rather than blocking it.
Development and QA in one pod
The engineers who write the ABAP work beside QA, so custom logic is proven against real data and the released-API discipline is actually enforced.
Remediation, not just new build
We take on the backlog of legacy Z-code that has to survive an S/4HANA move, which is the work that quietly derails migrations when it is left to the end.
SAP ABAP Development Services FAQs
Each answer is written to stand on its own, so an assistant can quote it without the surrounding page.
Related
Get your SAP ABAP work scoped
New RAP/CDS development, a Fiori backend, or a backlog of Z-code to remediate before an S/4HANA move — tell us which, and a senior ABAP engineer will scope it and what a paid pilot would prove first.