TXP Banking Convention

Is anyone familiar with Tax Payment Banking Convention (TXP for short)?  We are in the process of onboarding Tax Payments to be paid via Accounts Payable in our PeopleSoft environment, but a majority of these payments require specific codes/addendum information to be sent with the payment so the various tax entities know how to apply said payment.

I found a document (attached), that explains the convention, and it looks like NACHA recommends implementing this convention in conjunction with ACH format CCD+ as an addendum record.  PeopleSoft does support CCD+, but the addendum record it creates does not comply with TXP.