If you get a message "The Supplier for the Purchase Invoice does not exist in MYOB" even though you have checked they are the same

This could be due to 1 of two reasons
1.  Ostendo and MYOB allow commas in the Supplier Name but the MYOB-ODBC Driver doesn't so check if the Supplier Name has a comma in it and, if so, remove them from both Ostendo and MYOB
2.  Any MYOB Supplier record created from Ostendo has a Card ID of *None.  If the Card ID is other than this, then MYOB will not recognise it as being an Ostendo Supplier