InvoiceManager
The Invoice Manager component allows the ability to manipulate invoices for service requests. This includes adding, retrieving, and updating an invoice.
There are 2 unique constraints on table YY204:
INVOICE_NUM (AK1)
PAYMENT_REFERENCE_NUM (AK2)
Both come from Oracle Financials.
These rules were implemented to support the Marin Cargo services where one invoice / one payment is the norm. For AP services, the rule may change if they allow multiple payments for one invoice.