'Declaration
 
<WebMethodAttribute("This method establishs a subscription using a previously requested registrationID. The calling parameter registrationInfo is a complex type that includes the following information: registrationID - the previously requested registrationID obtained from the publisher by calling RequestRegistrationID, responseURL – the URL to which information should subsequently be published on this subscription, msFunction – the abbreviated string name of the MultiSpeak method making the subscription request (for instance, if an application that exposes the Meter Reading function has made the request, then the msFunction variable should include “MR”), methodsList – An array of strings that contain the string names of the MultiSpeak methods to which the subscriber would like to subscribe.  Subsequent calls to RegisterForService on an existing subscription replace prior subscription details in their entirety - they do NOT add to an existing subscription.")>
<SoapHeaderAttribute("MultiSpeakMsgHeader", Direction=SoapHeaderDirection.InOut)>
Public Function RegisterForService( _
   ByVal registrationDetails As registrationInfo _
) As errorObject()