Changes to Submit Invoice

added the non-success response with the status 410

added the new overdue enum value to the request property test/result

changed the pattern of the request property discounts/items/amount from ^[0-9]+(\\.[0-9]+)?$ to ^[0-9]+(\.[0-9]+)?$

changed the pattern of the request property items/items/price from ^[0-9]+(\\.[0-9]+)?$ to ^[0-9]+(\.[0-9]+)?$

changed the pattern of the request property items/items/total from ^[0-9]+(\\.[0-9]+)?$ to ^[0-9]+(\.[0-9]+)?$

added the new optional request property final

request body became required

added the new false enum value to the test response property for the response status 200

added the new true enum value to the test response property for the response status 200

added the non-success response with the status 404

added the non-success response with the status 409

endpoint added