Prepare Invoice Part Payment From Wallet

Prepares an invoice for part-payment where current wallet balance is used first and remaining amount is paid online.

Required body fields: invoice invoice number, currency code.

Response fields: message, invoice.invoiceNo, invoice.eligibleForPayment, invoice.partPaymentFromWalletBalance, invoice.currencyPaid, invoice.exchangeRate, invoice.chargeTotal.

Possible errors:

• 404: Invoice not found - invoice number does not belong to the customer.
• 404: Currency not found - supplied currency code is unknown.
• 400: Currency does not match expected credentials - invoice currency differs from request.
• 400: Wallet not found - customer wallet is missing.
• 400: Invoice already paid - invoice status is already paid.
• 400: Wrong Amount - invoice payable amount is invalid.
• 400: Wallet balance is too high for this endpoint - use full wallet payment instead.
• 400: Missing One or More Required Parameters - required body/query fields were not supplied.
• 401: Unauthorized - token is missing, expired, invalid, or the account/token pair was not found.
• 403: Access denied - gateway traffic guard/rate policy blocked the request.
• 429: Too many requests - gateway rate limit exceeded.
• 500: Unexpected Error - unhandled gateway or downstream service failure.