Comments on where is the SLA Schema

The SLA namespace page at http://docs.oasis-open.org/ns/soa-eerp/sla/200903 has a broken link on EERP-SLA.xsd. It points to http://docs.oasis-open.org/soa-eerp/eerp-sla/200903/eerp-sla.xsd which will return 404 -- Page Not Found error. 

Where is the SLA schema located? 

Eclogue Chang