Overview
The client’s BIR CAS applications, originally built on SAP UI5, needed to be modernized and made fully clean‑core compliant. Key challenges included:
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Existing UI5 applications were not compatible with the BTP ABAP Environment (Embedded Steampunk).
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Several components required redesign to align with clean‑core principles.
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The solution needed to be deployable across multiple client environments without custom rework.
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Migration required leveraging standard S/4HANA and BTP ABAP capabilities instead of legacy extensions.
Solution
To achieve full clean‑core compliance and BTP readiness, we redesigned the BIR CAS solution using modern SAP technologies:
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Developed Fiori Elements applications for consistent, upgrade‑safe UX.
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Built RAP (RESTful ABAP Programming Model) services for clean, scalable backend logic.
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Leveraged standard Business Objects (BO) wherever possible to reduce custom code.
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Created CDS views for reporting, validations, and data exposure.
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Ensured all components were compatible with BTP ABAP Environment (Embedded Steampunk).
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Structured the solution to be deployable across multiple clients with minimal adjustments.
Results
The clean‑core‑compliant BIR CAS solution was successfully delivered, resulting in:
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Smooth deployment to the BTP ABAP Environment (BWZ).
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A fully modernized architecture that is upgrade‑safe and extensible.
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A reusable solution that can now be easily deployed to additional clients.
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Reduced technical debt and improved long‑term maintainability.
Our Responsibilities
As part of the delivery team, we contributed across the full lifecycle of the clean‑core migration:
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Analyzed existing UI5 applications and identified required redesigns.
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Developed Fiori Elements apps and RAP‑based backend logic.
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Built CDS views and integrated standard BO to minimize custom code.
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Ensured all developments adhered to clean‑core and BTP ABAP guidelines.
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Supported testing, deployment, and stabilization in the BTP environment.
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Provided high‑level technical analysis to ensure safe migration and future scalability.