Job Description
Role description
ob Description: SAP ABAP Core – Vertex Integration
Role Overview
The ABAP Consultant is responsible for designing, developing, and supporting SAP–Vertex integration components that enable real-time tax calculation and compliance across SAP business processes (FI, SD, MM, BRIM).
Key Responsibilities
SAP–Vertex Integration Development
• Develop and enhance RFC-based integration with Vertex using the SAP Interface Component (SIC).
• Build and maintain outbound tax request interfaces (SAP → Vertex) and inbound response processing (Vertex → SAP).
• Implement logic to pass transactional data (invoices, POs, billings) for tax calculation.
• Integration follows an RFC-based pattern between SAP and Vertex SIC as outlined in LTM Proposal Vertex and E‑Invoicing SAP DRC LTM Prog SAP DRC PDF.
Interface Technical Object Development (RICEF)
• Develop reports, interfaces, conversions, enhancements, and forms for Vertex-enabled processes.
• Build ALE/IDoc, Proxy, and Web Service–based integrations.
• Create custom function modules for handling tax request and response processing.
• Apply enhancements through BADIs, user exits, and enhancement spots.
• Utilize ABAP interface capabilities such as ALE/IDoc, Web Services, and enhancements.
Tax Data Mapping & Logic
• Map SAP data elements (company code, plant, jurisdiction, material, customer, vendor) to the Vertex tax engine.
• Implement pre‑ and post‑processing logic for tax determination.
• Perform tax‑specific validations and error handling.
• Vertex process includes tax determination, jurisdiction mapping, and event processing as detailed in LTM Proposal Vertex and E‑Invoicing SAP DRC LTM Prog SAP DRC PDF.
Integration with SAP Modules
• Support integration across SAP modules:
– FI: AR/AP invoices
– SD: Sales orders and billing
– MM: Procurement and POs
• Enable integration for OTC, PTP, and Finance processes.
• Vertex integration spans FICO, PTP, and OTC modules as referenced in LTM Vertex and E‑Invoicing Proposal LTM Vert Proposal PDF.
Testing & Debugging
• Perform Unit Testing (UT) and System Integration Testing (SIT).
• Debug RFC calls, IDocs, and interface failures.
• Support UAT cycles and resolve production issues.
Performance Optimization
• Optimize ABAP programs for high‑volume transactions and real‑time tax processing.
• Use SAP performance tools (ST05, SE30, ATC) as required.
Support & Enhancements
• Provide production support for Vertex‑integrated processes.
• Analyze and resolve tax calculation issues.
• Implement change requests and regulatory updates.
Documentation & Governance
• Prepare Technical Design Documents (TDD) and interface specifications.
• Follow coding standards, transport procedures, and peer review practices.
Required Skills
Core ABAP
• Strong hands‑on experience with RICEF development, OOPS ABAP, RFCs, BAPIs, and Function Modules.
• Proficiency in ALE/IDoc, Proxy, and Web Service development.
• Experience implementing enhancements using BADIs and user exits.
