Cencora Commerce Platform

sequenceDiagram participant P as Pharmacy participant UI as Next.js UI participant AUTH as Identity (Okta) participant GW as API Gateway participant BFF as BFF (GraphQL) participant CAT as Catalog participant PRC as Pricing participant INV as Inventory participant ORD as Order Mgmt participant CMP as Compliance participant SAP as SAP ERP participant FUL as Fulfillment participant K as Kafka participant WMS as WMS/TMS Note over P,WMS: 0. AUTHENTICATION (B2B — First Gate) P->>UI: Navigate to abc-order.cencora.com UI->>AUTH: Redirect to Okta login P->>AUTH: Credentials + MFA AUTH-->>P: JWT (account: PH-45678, segment: independent, DEA: active, 340B: false, can_order_schedule_II: true) Note over P,AUTH: All subsequent requests carry this JWT Note over P,WMS: 1. PRODUCT DISCOVERY (identity-gated) P->>UI: Search NDC 12345-6789-01 UI->>GW: GraphQL query + JWT GW->>GW: Validate JWT GW->>BFF: Routed + JWT claims forwarded par Parallel fetch BFF->>CAT: Product details BFF->>PRC: Customer price BFF->>INV: ATP (availability) end CAT-->>BFF: NDC data + attributes PRC-->>BFF: Contract price ($42.30) INV-->>BFF: 850 units available BFF-->>UI: Combined response UI-->>P: Product page rendered Note over P,WMS: 2. CART P->>UI: Add to cart (qty: 100) UI->>GW: POST /cart/items GW->>ORD: Create cart item ORD->>K: cart.item.added K->>INV: Soft-reserve 100 units Note over P,WMS: 3. CHECKOUT — SAGA ORCHESTRATION P->>UI: Place order UI->>GW: POST /orders GW->>ORD: Initiate order saga rect rgb(238, 237, 254) Note over ORD,SAP: Saga Steps (orchestrated) ORD->>CMP: Step 1: Validate compliance CMP->>CMP: DSCSA serial verification CMP->>CMP: DEA schedule check CMP-->>ORD: Compliance PASSED ORD->>INV: Step 2: Hard-reserve stock INV-->>ORD: 100 units reserved ORD->>PRC: Step 3: Final price PRC-->>ORD: $4,230.00 confirmed ORD->>SAP: Step 4: Create sales order SAP-->>ORD: SO# 4500012345 end ORD->>K: order.confirmed K->>P: Email: Order confirmed Note over P,WMS: 4. FULFILLMENT K->>FUL: Process shipment FUL->>WMS: Pick/pack instruction WMS-->>FUL: Shipment SHP-98234 FUL->>K: fulfillment.shipped K->>P: Email: Tracking # sent Note over P,WMS: 5. DELIVERY WMS-->>FUL: Delivered FUL->>K: fulfillment.delivered K->>ORD: Mark order complete

sequenceDiagram participant ORD as Order Mgmt (Saga) participant CMP as Compliance participant INV as Inventory participant PRC as Pricing participant SAP as SAP ERP Note over ORD,SAP: Happy path until SAP fails... ORD->>CMP: Step 1: Validate compliance CMP-->>ORD: PASSED ORD->>INV: Step 2: Reserve stock INV-->>ORD: Reserved ORD->>PRC: Step 3: Final price PRC-->>ORD: Confirmed ORD->>SAP: Step 4: Create sales order SAP-->>ORD: ERROR — SAP timeout rect rgb(255, 235, 238) Note over ORD,SAP: COMPENSATION (reverse order) ORD->>PRC: Undo Step 3: Void price lock PRC-->>ORD: Done ORD->>INV: Undo Step 2: Release stock INV-->>ORD: 100 units released ORD->>CMP: Undo Step 1: Void compliance CMP-->>ORD: Audit record voided end ORD->>ORD: Order status = FAILED ORD-->>ORD: Queue for retry (Kafka DLQ) Note over ORD: Notification sent to pharmacy