Create transaction with supporting documents

Initiates a new transaction and simultaneously attaches required supporting documentation. This is particularly important for high-value transactions, cross-border payments, or transactions requiring compliance documentation. Accepted documents include invoices (for goods/services payment proof), contracts (for agreement evidence), proof of goods/services delivery, import/export licenses, or regulatory certificates. Documents should be uploaded as multipart form-data. Maximum file size and supported formats depend on your integrator configuration.