What problems do we solve (applicable to)
Payment system integration is not as simple as “connecting the channels”。For B2B companies，The real challenge is：Success rate and cost control when multiple channels are parallel、Interpretability of cross-border capital links、Compliance audittraceable、and stable operation under high concurrency and abnormal scenarios.。
GXT-HKProvide compliance-level integration and delivery for the following types of customers：
- PSP/Payment Gateway：Unified access and routing of multiple acquirers/local transfers/wallets (please refer to：Payment Gateway PSP）。
- Cross-border e-commerce/platform business：Multi-currency payment collection、Refund、Chargeback、Account sharing and reconciliation automation (please refer to：Cross-border payment solutions）。
- Overseas financial technology：KYC/KYB、Sanctions Screening、The underlying capabilities of transaction monitoring and regulatory reporting (please refer to：Fintech Compliance Consulting）。
- Institutions planning to apply/licensed：existLicense scope、Client funds segregation、Risk control threshold、Systematic implementation under record keeping and auditing requirements。
transaction state machine、event log、Unified evidence chain and report caliber，Support audit sampling and traceability。
multi-channel routing、Smart retry、Currency and geographical strategy、Failure reason structuring，Continuously optimize conversions。
KYC/KYB、Sanctions/PEP、Transaction monitoring、The black and white list and quota system can be modularized and accessed。
Three-party reconciliation、settlement batch、Handling fee split、Refund/Chargeback Processing，Facilitate financial closing。
Integration scope and reference architecture (end-to-end)
We define the scope of integration based on the "full transaction life cycle"，Covering everything from entry to settlement、from customer identity toContinuous monitoringcomplete closed loop：
- Pay-in：Card acquiring/local transfer/e-wallet/QR code, etc.；Unified API、Callback verification、Signature verification and idempotent processing。
- Pay-out：Supplier/merchant/user payment；Beneficiary verification、Quota policy、Exception interception、Batch withdrawal and receipt management。
- Wallet and Accounting (Ledger)：Multi-currency balance、freeze/thaw、handling fee、Exchange rate and profit and loss；Separation of accounts and business、Event sourcing。
- Routing and Orchestration (Orchestration)：Select channels by country/currency/MCC/risk level；Downgrade、fuse、Retry and make up orders。
- Risk control and compliance (Risk & AML）：KYC/KYB、Sanctions Screening、Transaction monitoring、Suspicious transaction prompts and disposal (can be connected：KYC identity verification system、eDon TM Transaction Monitoring System、Hong Kong Xintong AML/CRM Compliance System）。
- Settlement reconciliation & Reconciliation）：Channel statement/bank statement/internal statement three-party verification；Differential attribution and automated work orders。
- Data security and privacy：Key management、access control、data minimization、Log desensitization and retention；Can be referenced：Data security assessment、Personal information protection、Data privacy policy development。
Compliance and licensing boundaries (common Hong Kong/cross-border situations)
Does the payment system require a license?，Depends on the business model (whether it involves fund collection and payment/collection and payment/currency exchange/customer fund control, etc.)、Transaction links and jurisdictions。In projects, we usually first do a four-dimensional disassembly of "business-funding-data-responsibility"，Re-determine license plate boundaries、Contract structure and system control points。
Common compliance concerns in Hong Kong(Example，Does not constitute legal advice)：
- MSO related activities under the AMLO framework：If currency exchange or remittance services are involved，Need to assess whether Hong Kong MSO compliance requirements are triggered；System level needs to meet customer due diligence、record keeping、Continuous monitoring and suspicious transaction handling capabilities。
- Bank Cooperation and Account Compliance：The implementation of payment links is usually inseparable fromOpen an accountMatches bank-side review logic，Can be referenced：Hongkong(HSBC/Standard Chartered/Hang Seng)Open an account。
- Cross-border operations and multi-regional supervision：When the service covers multiple countries/regions，Need to acquire local orders、Withdraw money、Capital pool、Coordinate data export and marketing compliance (please refer to：Cross-border business compliance、Marketing material review）。
The role of Hong Kong Information Communications is to "engineer" compliance requirements：Convert license/system/process requirements into system capabilities (thresholds、rule、Field、log、Permissions、retention period、Work orders and reports)，And with channel、Banks and third-party service providers can be connected on the ground。
Support layered due diligence for individual/enterprise customers、UBO and controller information structure、Dynamic risk ratings and triggered reviews。
List source management、match threshold、False alarm processing closed loop、Manual review and release evidence chain。
Real-time/quasi-real-time monitoring based on rules + portraits + thresholds；Alarm diversion、Upgrade and Disposal SOP。
Field level retention、Audit logs cannot be tampered with、Consistency of report caliber and optimization of evidence collection efficiency。
Implementation method and delivery process (controllable rollout)
Sort out the business model、Fund flow/information flow、role responsibilities、KPI (success rate/cost/delay/rejection rate) and compliance constraints。
Reference architecture、Interface specification、state machine、idempotent strategy、Key/certificate、Permission model and data retention policy review。
API docking、Callback signature verification、Exception code mapping、Routing strategy、Statement analysis、Sandbox joint debugging and stress testing。
KYC/KYB、Sanctions Screening、Transaction monitoring rules、Limits and disposal procedures，Complete drills and sampling reviews before going online。
Three-party reconciliation、differential attribution、Handling fee split、Clearing up the billing/refund/rejection process，Develop financial statement standards。
Grayscale volume、SLA and Alerts、Abnormal work order closed loop；Weekly/monthly review success rate、Cost and Risk Metrics。
Cost and Budget Reference
Payment system integration fees typically consist of three components:：(1) System integration and project delivery(interface、routing、Reconciliation、Risk control/AML access、Operation and maintenance system)；(2) Compliance and institutional documents(AML/KYC Framework、record keeping、training and audit preparation)；(3) License/entity and operation basis(If it involves licensed development)。
The service fees are subject to applicable jurisdiction、Business scope、Main structure、Data complexity and delivery schedule assessment；Involving government fees，The latest fees announced by the corresponding regulatory agency shall prevail.。
If your current focus is to “get the payment link running stably first”，Then gradually promote licensing and system construction，We can split delivery and budget by stage，Prioritize completion：channel access、Routing success rate、Clearing and settlement reconciliation、Risk control interception and audit logs。
FAQ (frequently asked questions)
We focus on system integration：Unified API and state machine、Route orchestration、Clearing and settlement reconciliation、Risk control and AML、Operation and maintenance SLA, etc.；If channel resources are needed，We can also assist with docking and assess channel compliance and stability。
Through multi-channel routing strategies (country/currency/risk/cost dimensions)、Failure reason structuring、Smart retry and downgrade；At the same time, establish closed-loop management of chargebacks/refunds/disputes.，Avoid hidden costs。
uncertain。The key is whether the business model and capital control trigger license requirements。We usually do boundary sorting and compliance path design first，Then decide whether to implement the technology first or advance with a license first，Avoid "forced reconstruction after the system goes online"。
The minimum standard is：Customer layer due diligence、Sanctions/PEP Screening、Transaction monitoring and alarm handling、Record keeping and audit traceability、As well as the authority and evidence chain for freezing/interception/review/release。Can be connected to existing systems or use third-party modular capabilities。
Common reasons include：Channel status is inconsistent with internal status、Currency/exchange rate/handling fee standards are not uniform、Refund/chargeback period、and missing statement fields。We will establish a three-party reconciliation model and difference attribution rules，And turn the difference into a closed loop of work orders。
usually include：Key and certificate management、least privilege、Sensitive field encryption/desensitization、Log retention and immutability、access audit，And the matching of privacy policy and data processing notification (please refer to services related to data security assessment and privacy policy formulation)。
Depends on number of channels、Country/Currency、Whether to include accounting/wallet、and compliance module depth。We recommend spending 2-4 weeks to complete boundary clarification and program design.，Then deliver joint debugging in stages、Reconciliation、Risk control and grayscale go online。
If you want us to quickly determine the project workload and risks，We recommend preparing the following materials for your first assessment：Business flow chart (including capital flow/information flow)、Target market and currency、Channel list (or expected channel type)、Settlement and reconciliation needs、and existing KYC/AML and data retention requirements。You can also directly pass About Contact Hong Kong Information Communication Co., Ltd. to obtain the evaluation checklist。
Compliance Acceptance Checklist for Payment System Integration
Payment system integration is more than just interface development，Fund flow should also be verified simultaneously、Merchant and customer identities、Transaction monitoring、Chargeback dispute、Data security and regulated activity boundaries。Technical launch cannot replace license or bank approval。
- Draw payment、liquidation、Refund、Chargeback、Data and fund flows of client funds and third-party service providers。
- Verify KYC/KYB、Sanctions Screening、Transaction limit、Exception upgrade and record saving function。
- Clarify PCI DSS、key、Permissions、log、Disaster recovery、Incident response and supplier liability。
- Complete compliance before going live、business、Acceptance and rollback plan jointly signed by technology and finance。
Official verification：PCI Security Standards Council。The bank or service provider will decide according to the customer's、industry、Independent approval of regional and risk policies，Cannot promise to open a fixed account、Access or online results。
Integrators and external validation roles
Project recommendation configuration business interface person in charge、Development and operation and maintenance、security personnel、Financial reconciliation personnel and compliance review personnel，And clarify production permissions and online approval。When payment card data is involved，should be stored according to actual、deal with、Determine the scope of the environment that transmits or affects cardholder data and determines PCI DSS applicability；Compliance verification arrangements are determined by the acquiring bank or card organization plan。QSA is a Qualified Safety Assessment Agency，ASV provides accredited external scanning services，Not every engineer must hold QSA qualifications，It does not replace the payment business license。
Source basis (verified on September 6, 2026)：PCI SSC：PCI DSS Scope and Validation Roles。The specific obligations shall be subject to the applicable system and the facts of the individual case.。
