- For SAP S/4HANA & Materials Management leaders
SAP SCM architecture for the problems without a template.
I'm Omar Olwan — a master of SAP Materials Management and supply chain, at home in the cross-functional ground where MM meets AP, FI, and PM. I lead design authority on multi-country programs, and I'm still the one who writes the functional specs, the code, and knows the tables cold.
10+ SAP programs delivered · Mining · Construction · Manufacturing · Retail · Humanitarian Operations · PMP-Certified
The approach
Five things that don't change from
program to program.
Deep, not generalist
SAP MM, MRP, procure-to-pay and source-to-pay — including the master data work
most architects delegate: legacy-to-SAP mapping, load templates, and mapping
matrices built for migration teams to actually execute against.
Redesigns, not just builds
I'm usually brought in once a template has stopped working. I rebuild it into the enterprise standard — not just patch what's already there.
Cross-platform & integration
S/4HANA, Ariba, and Coupa — plus the punchouts, catalogs, and interfaces that connect them to everything else in the landscape.
Built for real operations
Designed for cutover, UAT, hypercare, and end-user adoption — the phase where most procurement programs actually break.
MM + PM, a rare combination
Deep in Plant Maintenance/EAM alongside procurement — work orders, repair/fabrication, core returns — so maintenance-driven buying doesn't need a second consultant.
Where I go deep
Six places the work actually happens.
SAP S/4HANA Materials Management
Master data & MRP, purchasing & approvals with BRF+ Flexible Workflows, inventory movements including STOs, and OBYC account determination.
Master Data Mapping & Migration
Legacy-to-SAP mapping, load templates, and mapping matrices handed to data migration teams as artifacts they can actually run against.
SAP Plant Maintenance (PM) / EAM
PM-driven procurement, stock and non-stock determination for maintenance materials, PM order-driven returns, and asset master data integration.
Ariba & Coupa Source-to-Pay
Guided buying, sourcing, supplier lifecycle management, catalogs, and OCI/cXML punchout.
Integration & Middleware
Boomi, IDocs, master data sync, and event-driven flows between SAP and non-SAP systems.
Program Governance
Cutover planning, security and GRC, and template governance across countries — PMP-certified.
By the numbers
10+
SAP programs delivered end to end, across mining, construction, manufacturing, retail, and humanitarian operations.
5
Countries running one redesigned source-to-pay template — now the enterprise standard, not a one-off build.
PMP
Certified program governance — cutover planning, security and GRC, template governance on every engagement.
Have a process that needs a real redesign, not a patch?
If it's SAP S/4HANA procurement, an Ariba or Coupa integration, or materials management that still needs someone who does the work — let's talk.