Dear all, I attach a version of the overall OGSA document with changes to the sections on data services (sections 2.6 and 3.5). These are intended to be contributions to a revised release of the OGSA document, called OGSA 1.5. We will discuss this on Thursday's OGSA-D telcon. In the attached version I have used tracked changes to give an indication of what has changed. There are also several comments regarding open issues. Dave Berry Research Manager, National e-Science Centre 15 South College St., Edinburgh Tel: +44 131 6514039