If KYC has already enabled the cross-border trade collection business line and platform collection is also required, apply separately through the KYC Business Enablement API. Follow the same process when adding cross-border trade collection to an account that already has platform collection enabled. Operations for the applicable business line are available only after KYB approval; otherwise, business requests cannot be initiated. Upload files and image attachments through the Upload File API. If only one business line is required, complete the KYC Application API flow; this API does not need to be called separately.