In doing an export out of OLX you may receive the error "String or Binary Data will be Truncated".  What OLX is telling you is that you have a field in the data you are exporting that exceeds the field length in the file that you are moving the data into.  We have witnessed this when lengthy data has been copied into a comments column by accident.  This is something that you could quite possibly find on your own but it would be best to enter a help desk ticket as we will be able to determine fairly quickly where the problem lies.