I tried to use the service on SOAPui and everything worked fine. Did you try to make this test? With that you can check if the error are related to the WebService or related to the ITPAM call.
Hi I am facing the exactly same issue can some one post the solution here .
the method works fine in SOAP UI but does not work when i use this in PAM getting error like "soapenv:Server.generalExceptionException occurred assigning user to business unit role:The INSERT statement conflicted with the FOREIGN KEY constraint "$usm_c_r0000218f00000000". The conflict occurred in database "mdb", table "dbo.usm_role", column 'role_id'.com.ca.usm.soap.axisInterfaces.WebServiceException"