Hello,

I am trying to create webservice that uses (the methods return) custom data
types that are defined in a project different than the webservice project
itself (I am working with VS.NET 2003).
Let's say then that I have datatypes.dll that defines the class Order.
I have a webservice OrderService that has a method returning Order. I add a
reference to the datatype project to the webservice and I add a using clause
to the namespace in which Order is defined
Everything seems to work fine but when I add a reference to that webservice
from a project of mine, I get a error of the type "Order is an ambiguous
type" when trying to compile the client project.

What am I doing wrong?