AR Invoice Print Report is completed in error - Issue with MLS function

 Hi All

    When we are submitting AR Invoice Print Program it's completing in error with following message
for some bill to countries.
---------------------------------------------------------------------------------------------------
Calling language function ARP_RAXINV_MLS_PACKAGE.ARP_RAXINV_MLS_FUNCTION  : 29-APR-2010 04:32:43

Language function returned the following languages : US .  : 29-APR-2010 04:32:43

MLS Request completed normally with outcome Error
--------------------------------------------------------------------------------------------------

on changing country it's working fine, not sure whether it's related to country

Thanks
Kamalakar