If you are testing out NAV Web services and find that you cannot make any calls beyond your initial and then find that the NST is no longer running, please try the following:
Compile the following:
Type
ID
Name
CU
6810
EP Request Handler
CU
8700
Mobile Document Dispatcher
CU
99008528
BizTalk Appln. Srv. Startup
The error commonly occurs because one or more of these three codeunits do not have an entry in table 2000000071 - Object Metadata. They are all called in codeunit 1 on CompanyClose(). This then means that the call itself will run fine, but the closing of the connection will cause the failure and the NST to crash.
Lars Thomsen
Support Engineer
Microsoft Support

Источник:
http://feedproxy.google.com/~r/Micro...vice-call.aspx