Blogpost by Pablo de Castro, METIS2OpenAIRE project coordinator at euroCRIS The OpenAIRE-funded METIS2OpenAIRE project has run from early Feb to mid-May 2018. Its aim has been to make a first institutional CRIS system OpenAIRE-compatible as per the updated CERIF-XML Guidelines for CRIS Managers. The process has involved the development of a minimally sufficient validator that future CRIS systems may use as a means to confirm their own compatibility with these Guidelines very much in the way...