The GetSyncStreamOutputBytesRequest element specifies the input data for the GetSyncStreamOutputBytes WSDL operation.

 <xs:element name="GetSyncStreamOutputBytesRequest" xmlns:xs="http://www.w3.org/2001/XMLSchema">
       <xs:element minOccurs="0" name="BytesReceived" type="xs:int"/>
       <xs:element minOccurs="0" name="JobId" type="xs:unsignedLong"/>

BytesReceived: The integer value specifying the number of bytes of the output file that the protocol client has already received.

JobId:  A JobId (section element identifying the conversion job to which the output file belongs.