Changes to Creates an invoice

added the new EXPORTED enum value to the status response property for the response status 201

added the new ONE_OFF enum value to the invoiceGenerationType response property for the response status 201

added the optional property oneOffProducts to the response with the 201 status

the response property failureReason became nullable for the status 201

added the optional property agreementProducts/items/tax to the response with the 201 status

added the optional property products/items/tax to the response with the 201 status

added the optional property tax to the response with the 201 status

added the optional property ticketProducts/items/tax to the response with the 201 status

added the success response with the status 204

endpoint added