Hi all,
For info version 1.1 can now be tested on the fattura PA site 
http://sdi.fatturapa.gov.it/SdI2FatturaPAWeb/AccediAlServizioAction.do?pagina=controlla_fattura
I only started recently with the implementation and actually implemented 1.1 straight away.
Note that i actually have the impression that the difference between 1.1 and 1.0 is no so big.
Why? => Because the first 1.1 i got from my system i was able to convert them to 1.0 by just changing following 2 fields:
<nm:FatturaElettronica versione
FROM 1.1
-<nm:FatturaElettronica versione="1.1" xmlns:nm="http://www.fatturapa.gov.it/sdi/fatturapa/v1.1" xmlns:prx="urn:sap.com:proxy:......">
TO 1.0
-<nm:FatturaElettronica versione="1.0" xmlns:nm="http://www.fatturapa.gov.it/sdi/fatturapa/v1.0" xmlns:prx="urn:sap.com:proxy:......">
<FormatoTrasmissione
FROM 1.1
<FormatoTrasmissione>SDI11</FormatoTrasmissione>
TO 1.0
<FormatoTrasmissione>SDI10</FormatoTrasmissione>
So maybe would even work to 'simply' change version the other way around. Sounds to easy but you never know.
Did you also already check the differences between version 1.0 and 1.1?
I might be wrong but aside from the version indication i only see following differences:
- <NormaDiRiferimento> not anymore in version 1.1 => change code and leave blank
- <ModalitaPagamento> possible values is extended => MP18 to MP20 are new => extend table ZIT_MODPAGA and domain ZIT_MODPAG
- <Natura> possible values is extended => N6 is new => extend table ZIT_NATUR and domain ZIT_NATURA
(see excels on FatturaPA with format description: Table view of the FatturaPA trace version 1.1 and Table view of the FatturaPA trace version 1.0)
Note: i'm pretty sure if you implement the latest version of the notes, you will get version 1.1 by default.
Also, we actually set version for the xml in IF_EDOC_INTERFACE_CONNECTOR~TRIGGER:
ls_message-part1-versione = '1.1'.
ls_message-part1-fattura_elettronica_header-dati_trasmissione-formato_trasmissione = 'SDI11'.
Hope this helps (if not much maybe a little...)
Regards,
Samuël