Use of 'advice' [duplicate]
Solution 1:
These "advices" are the physical (or electronic) notifications of payment or other business transaction and can be made plural.
https://www.merriam-webster.com/dictionary/advice
This I fairly common usage in payroll within the United States, especially in large companies which pay electronically through direct deposit. The employee receives a stub called a payment advice indicating hours, pay, taxes, etc... while the funds are direct deposited. The individual document is an advice while a group of them are advices.