I have a BPEL application in 11g with the schema-validate-input property of the binding set to true. When I send a request to this application I get the error:
Input Violates Schema : cvc-elt.1: Cannot find the declaration of element
What this tells me is that it is unable to locate the xsd for the message schema.
I am using Oracle Fusion Middleware 11.1.1.5.0 release.
It's able to find your schema,but couldn't find the declaration of element. Every BPEL process has a WSDL and within this WSDL, you will find either inline schema or schema's imported from another file.
So, check your BPEL process WSDL for schemas used.