How to create Workspace using API

Hi Friends,

I am trying to create a Workspace in ProjectLink but using the follwing API but when I execute it throws me the error :

Error:

INFO  : wt.system.err Administrator - (wt.inf.container.containerResource/26) wt.inf.container.ClassicContainerNotFoundException: Context not found: "Windchill PDM"

Code:

WTPart part = getPart("xxxxxxx");

EPMWorkspace workspace = wt.epm.workspaces.EPMWorkspace.newEPMWorkspace("NewWorkSpace", SessionHelper.getPrincipal(),FolderHelper.getFolder(part) , WTPartConfigSpec.newWTPartConfigSpec(),EPMDocConfigSpec.newEPMDocConfigSpec() );

PersistenceHelper.manager.save( workspace );

can anyone help me how I can achieve this