Oracle Report Errors: REP-0110, 1070

REP-0110: Unable to open file 'XX_TEST.rdf'.
REP-1070: Error while opening or saving a document.
REP-0110: Unable to open file '/somepath/reports/US/XX_TEST.rdf'.

Fix:
Check the file permission
Transfer the rdf file to server in binary mode instead of text mode.