Amicus Premium Billing is designed to accept a payment entry on an Amicus file without an outstanding invoice. This payment will be recorded as a General Retainer balance amount on the file.
The message states that Amicus does not permit a negative amount or minus amount entry towards General Retainer as it will result to a credit / negative balance.
_This action is not permitted because it would result in a negative General Retainer
Balance for File [AmicusfileName]. The File would have a -#.##(amount) in account General Bank Account as of [Day,Month,Day,Year]._
(Below is a sample image of an negative amount entry on a Receive Payment window.)
The Amicus user can make use of the General Retainer Refund feature in order to reduce and make adjustment on the General Retainer balance.
Open an File
Go to Billing Tab
Click on General Retainer
Select New > General Retainer Refund