Problem
While submitted expenses to GP, you get the following error
System.Web.Services.Protocols.SoapException: Server was unable to
process request. An exception occurred that the exception subsystem was
unable to log. Consult your System Administrator.
Solution
First read the link below
This is a web service installation issue.
Make sure
the web service is installed, web service configuration wizard is run (see last
comment on the link below) and then web service setup in done (grant access to the users to the
web service and configure policies - see attached document,
refer pages 2 ,3 and 4 after install). Finally, if "Get Company Info from Company Profile" is unchecked on settings page of your integration app, make sure the GP Company ID on the settings page of the integration app is set to the company ID as per page 2 of the attached document.
https://community.dynamics.com/gp/f/32/t/22528