Naresh, I was unaware of the --log-level='debug_rpc_answer' switch. That's a hot tip. Thank you! I think I prefer your other suggestion, but it is not clear to me. I access the RPC from my own program by means of https://pypi.python.org/pypi/openerp-client-lib. Do I need to find xmlrpc.ServerProxy calls in it's source code? Doesn't V7 make the GTK client obsolete?

Hi Martin, Yes the GTK client is obsolete since V7. And as you are using the openerp-client-lib you will need to change the source code http://bazaar.launchpad.net/~niv-openerp/openerp-client-lib/trunk/view/head:/openerplib/main.py at line 82 you can replace " service = xmlrpclib.ServerProxy(url)" by service = xmlrpclib.ServerProxy(url,allow_none=True)

So that's a server side setting that my XMLRPC client cannot request or set itself. Is that correct? Sorry to be thick. It's a conceptual thing and I want to be sure we're not talking at cross-purposes. (I come from the Java world and I'm fairly new to OpenERP and Python.)

your client can pass the parameter while making the xmlrpclib.ServerProxy object to communicate.

I'll let you know how I get on as soon as I try it. Thank's so much.

You're my hero! (but I have not seen how my "... client can pass the parameter while making the xmlrpclib.ServerProxy object to communicate." How do I do that?)

Hi Martin, If you are using openerp-client-lib as you told in your first comment then I have already answer how to pass the parameter in my 2nd comment along with line no to make the changes.

Naresh. Sorry. You are quite right. I had already worked too many hours when I wrote that. I am indeed using openerp-client-lib, and your solution worked exactly as you said. My addled brain was seeing the library as a service I am using, and I was wondering if there exists a way to tell it to enable and disable None 'on-the-fly'. Perhaps subclassing? This is not at all urgent, however.

Thank you very much Mr. Naresh Soni (nch)