As an alternative to training the system to extract supplier names more accurately, allow the user to define or configure the system to select a specific supplier name based on a feature of the invoice document -- e.g., Dext can't read the logo, then map the address text, email, or phone number to a specific valid supplier in our list. Let the user/administrator control it if the system has trouble with it.

Have the option to extract the correct locations when items from the same supplier but multiple locations are submitted (example invoices from Amazon.co.uk and Amazon.au to be extracted as different suppliers instead of just Amazon)