Use this skill when designing or implementing FSC-specific integration: core banking data sync, custodian feeds (Schwab/Fidelity), market data pipelines, or payment processing wired to FSC Financial objects. Triggers: syncing FinancialAccount or FinancialHolding records from a core banking system, integrating a custodian data feed into FSC Wealth Management, market data prices updating CurrentValue on FinancialHolding, payment transactions flowing into FSC from an external ledger. NOT for generic Salesforce integration, non-FSC object sync, or MuleSoft platform configuration unrelated to FSC financial objects.