EZID has just begun encountering a problem in which DataCite XML metadata records that have always been accepted by DataCite are now being rejected by DataCite with the error,
“[xml] xml error: s4s-elt-character: Non-whitespace characters are not allowed in schema elements other than ‘xs:appinfo’ and ‘xs:documentation’. Saw ‘301 Moved Permanently’.”
Although DOI resolution is not affected, you may be unable to create or update DOIs while this problem persists.
We have contacted DataCite technical support, and hopefully the problem will be resolved shortly.