post
https://api.skovik.com/v1/payment_invoices
Create a Payment Invoice
Source qualifier & source identifier
The source_qualifier is an identifier of the payment invoice source, usually a bank, such as 'barclays'.
All payment transactions that belong to a payment invoice, must have the same source_qualifier as the invoice.
The source_identifier must be unique per source_qualifier, company-wide.
These values must only contain the characters a-z, 0-9, _ and -, with a maximum length of 50 characters.
Payment transactions
All payment transactions included in the payment invoice must already exist in Skovik.
They're unique and identifiable via the combination of source_qualifier and source_identifier.
