API Docs / Operations / Clients - CSV Import

Clients - CSV Import

CSV-based client import with flexible column mapping. Upload a CSV file to get a preview with auto-suggested column mappings. Configure mappings using system defaults (Limited Company, Individual) or create custom mappings. Start the import with sync-when-fast pattern (waits up to 10 seconds, returns 201 if completed, 202 if still processing). Supports create-only, update-only, or create-and-update modes with configurable match fields (CompanyNumber, Code, Name, etc.).