Auto Generate Payment Reference PYMNT_ID_REF Outside Of Pay Cycle In Accounts Payable

Can a payment reference / PYMNT_ID_REF value be automatically generated outside of running pay cycle?  End users want the payment reference generated to meet the PeopleSoft requirement for a payment reference to be entered when manually recording a payment.  Due to volume they don’t want to manually enter a reference.

End users have Wire and ACH/EFT payments to record manually, but want the reference number to be automatically generated and saved on the voucher.  The payments were made outside of PeopleSoft and users state they don’t need the actual payment number recorded. 

Is there any functionality that can autogenerate the payment reference?