Thanks for the input. The error message is telling you that the metadata IS MATCHING a template, namely the FGDC template. The problem is your metadata is not passing the standard validation rules set up for FGDC metadata:
Originator is a required element but is missing from the XPath, /metadata/idinfo/citation/citeinfo/origin
You have two options. Either correct the metadata by adding in the missing required elements (preferred), or you relax the FGDC validation rules on your Geoportal Server (not recommended if you intend sharing the metadata with other people outside your organization).