ETD Delivery Playbook

End-to-End & API Testing for Enhanced Transaction Details

How we validate every layer of the Enhanced Transaction Details (ETD) platform — from request validation and merchant enrichment to mobile UX and compliance — to deliver a three-second, fully enriched customer experience.

API-first Automation 3s End-to-End SLA 98.6% Composite Key Match PCI, SOX, GDPR Ready

API Testing Framework

We lead with an API-first testing pyramid to catch defects before they ever reach the mobile experience. The focus: fast, stable feedback loops that validate business logic directly at the service layer.

Core Principles

  • ⚡Faster execution by bypassing brittle UI layers.
  • 🧭Reduced flakiness from cosmetic frontend changes.
  • 🔍Direct validation of core enrichment business rules.
  • 🤖CI/CD-ready automation at scale.

Parameter Validation

  • Required controls: auth, channel, identifier, trace ID, transaction ID.
  • New contract parameters: data segments & unique Request IDs.
  • Optional parameter coverage and graceful degradation paths.
  • Malformed, invalid, and missing parameter edge cases.

Transaction Types

  • Pending POS enrichment with near-real-time merchant context.
  • Posted POS validation for logos, addresses, and history.
  • Non-POS safeguards to prevent over-enrichment.
  • Debit-only checks to keep ACH and other flows untouched.

Merchant Enrichment

  • Single vs. multi-merchant payloads (up to four per transaction).
  • Suppression logic keyed off merchant role codes.
  • Null and missing data scenarios for resilience.
  • Logo URL, address, and geo accuracy validation.

Bucket Management

  • Default bucket behavior with Bucket 1 fallbacks.
  • Multi-bucket distribution across Buckets 2–4.
  • Aggregator lookups when bucket IDs are omitted.
  • Query path validation for upstream bucket assignments.

End-to-End Testing Strategy

The critical flow we defend: card swipe to mobile display in under three seconds, with every enrichment element in sync across ETD, CDP, FCDP, and Cassandra.

  1. Transaction initiation at merchant POS (e.g., Starbucks).
  2. Real-time authorization across payment networks.
  3. CDP processing for logging & traceability.
  4. FCDP settlement with composite key generation.
  5. Data ingestion into ETD from FAP/CDP pipelines.
  6. Merchant enrichment lookups for logos and metadata.
  7. ETD API response validation for enriched payloads.
  8. Mobile app rendering with enriched transaction tiles.
  9. User interactions drilling into ETD detail views.
<3s
End-to-end SLA
<100ms
API response
100%
Data accuracy

Cross-System Integration

  • CDP ↔ FCDP: Composite key matching at 98.6% and climbing.
  • Cassandra ↔ ETD API: Partition tuning for sub-100ms lookups.
  • Merchant Enrichment ↔ Logo Service: Consistent imagery & metadata.
  • Real-time ↔ Batch: 92% reconciliation with automated variance reporting.

Data Consistency Checks

  • Transaction parity across ETD, CDP, FCDP, and mobile.
  • End-to-end timestamp precision and timezone alignment.
  • Currency, amount, and FX rounding accuracy.
  • Merchant data stability during system handoffs.

Mobile App End-to-End Testing

Every enriched transaction culminates in a user session. Our mobile QA ensures the ETD experience reinforces trust and clarity, whether on consumer or business cards.

  • Full ETD screen validation inside iOS & Android builds.
  • Click-through journeys from pending POS tiles to detail views.
  • POS-only gating to avoid non-enriched click targets.
  • Responsive logo rendering and high-DPI checks.
  • Coverage across Sapphire, Freedom, and business portfolios.
  • Device matrix for screen sizes and performance tiers.

User Journey Anchors

  1. Transaction history feed surfaces enriched POS tiles.
  2. User taps to launch ETD details with merchant branding.
  3. Async enrichment gracefully refreshes without jank.
  4. Accessibility checks for contrast, VO, and tap targets.

Mobile QA closes the feedback loop on upstream enrichment accuracy while measuring the perceived latency target: three seconds from swipe to screen.

Error Handling & Edge Cases

  • Server-side 500 remediation during bucket lookup regressions.
  • 400-level contract policing for invalid parameter mixes.
  • 401 coverage for auth break-glass drills.
  • 404 fallbacks when transactions are missing or delayed.
  • Timeout handling, retries, and circuit breaker validation.
  • Missing transaction data and null merchant responses.
  • Composite key uniqueness checks for weekend processing spikes.
  • High-volume tests with >5 merchants in payload.
  • Async refresh verification where first call returns raw, second call returns enriched details.

Performance & Load Testing

  • Peak traffic modeling at 15k transactions per minute.
  • Stress envelopes at 150% load with graceful degradation.
  • Two-hour burst testing for sustained throughput confidence.
  • Recovery validation to baseline in under 30 seconds.
  • Cassandra partition tuning for predictable read latency.
  • <100ms API response targets under realistic load.
  • System-level SLA: <3 seconds swipe-to-screen.
  • Uptime objective: 99.99% availability.
  • 5% failure injection to harden resiliency playbooks.

Security & Compliance

  • Multi-factor authentication validation and secure session lifecycle.
  • Data masking policies for PII across user roles.
  • Strict HTTPS enforcement and certificate rotation drills.
  • PCI DSS adherence for payment data protections.
  • SOX-aligned access controls, change management, and audit trails.
  • GDPR compliance for consent, minimization, and retention.
  • OWASP API Security Top 10 coverage during pen testing.

Compliance Posture

Security validation runs in lockstep with functional testing to ensure every release candidate meets regulatory expectations before promotion.

We combine automated scanning with manual review to maintain zero critical vulnerabilities and high confidence in data stewardship.

Testing environments mirror production, enabling realistic rehearsal for a 5–7 million user footprint.

Testing Timeline & Quality Gates

Key Windows

  • Internal Testing: Jun 2 – Aug 19, 2025 (ETU/DEL2).
  • Performance Cycle: Jul 15 – Aug 19, 2025.
  • QA Validation: Aug 19 – Oct 14, 2025 (Digital Channels).
  • Friends & Family: Launch targeting Sep 23, 2025.
  • Mobile Release: Aiming for October 2025 inclusion.

Non-Negotiable Milestones

Aug 19: QA must begin with conditioned data and UI builds ready. Sep 17: Data conditioning complete with QA UI deployment.

Go / No-Go Criteria

  • Composite key matching ≥ 98.2% (currently 98.6%).
  • Transaction reconciliation ≥ 92% achieved across systems.
  • API response times consistently <100ms.
  • End-to-end SLA of <3 seconds maintained.
  • Zero critical or blocking defects ahead of launch.

By enforcing production-like data sets and replaying real transaction journeys, ETD earns customer trust long before GA launch.