e-service developers DecisionSoft Ltd Inland Revenue 2005-02-10 2006-07-27 text/xml http://www.w3.org/2001/XMLSchema XML Schema, W3C Recommendation 2001 [ISO 639-2/B] ENG Inland Revenue core-v2-0 IRenvelope CRNtype AOrefType (C) Crown Copyright 2005 Economics, Finance and Tax CIS Return message