Hi
for invoking the any service we need to specify from the foler to service but no need to give the pkg name.how the IS can identify the pkg.
suppose package a
folder b
service recivedoc
to call this service we have to call like this
b:receivedoc

The package is not part of the namespace. It is a design-time organizational helper only.

All elements in IS are uniquely identified by their fully qualified name. As Rob mentioned, this begins with the name of the top-level folder under which the element was created in Developer, followed by any subfolders separated by dots and finally by a colon and the name of the element (service, document type, trigger, etc.).

For example the built-in service “addInts” is contained in the WmPublic package, but its fully qualified name is pub.math:addInts. The createSoapData built-in service is also contained in WmPublic package and has a fully qualified name of pub.soap.utils:createSoapData.

Mark