Patch 8373995:R12.PO.A failes as the form “POXPOVPO.fmx” could not compile

Hi,

While applying the patch, the form “POXPOVPO.fmx”  is not compiling. when manually tried to compile, below error occurs.
FRM-30064: Unable to parse statement select  nls_language,language_code from fnd_languages fl ,po_vendor_sites_all pv  where
fl.nls_language  = pv.language and pv.vendor_site_id = :headers_folder.vendor_site_id
union
select nls_language ,language_code  from fnd_languages fl where
fl.language_code = userenv('LANG').
ORA-00918: column ambiguously defined
Record Group LANGUAGE
Form: POXPOVPO

FRM-30085: Unable to adjust form for output.

Regards.