My follow-up question would not send - I got that automatic ERROR...message again...so I have to use the primary ASK A QUESTION tool.
Thanks for the response Jo-Ann. I'm afraid that as I'm tax resident in Ireland and not paying any income tax in France - yet - that I'm excluded from setting up My Private Space and I haven't been issued with a general fiscal number. The fiscal numbers on the Avis D-Impot / Taxe Foncieres and Tax D-Habitation paper notifications are different for each property. I paid the Taxe Foncieres online on 18th October in the ONLINE PAYMENTS section of the www.impots.gouv.fr. and it wasn't necessary to register. (Well - I was excluded). I am still at a loss of that Reference de l-avis number and cannot proceed to pay on time without it. The deadline is extended for online payments so I was hoping to have received the paper postal bill before now....this is becoming increasingly complicated and I am seriously thinking of conceding defeat.
Many thanks again.