The API specifications for both transaction endpoints have been updated with improved descriptions and clarifications. Key points for partners:

• amount supports both positive values (charges) and negative values (credits/refunds)
• reference_text and reference_number are optional but recommended; including them improves the user experience in the PMS by providing outlet name, revenue centre, or check number context
• bill_number is an optional query parameter (default: 1) specifying which bill the charge is posted to