XML Gateway for Electronic Invoicing

Summary: How XML Gateway works related to electronic invoicing.

Content (please ensure you mask any confidential information): It would be helpful to have some information about how XML Gateway works for electronic invoicing. How the invoices and transactions are processed, the formats, the states, if they are sent to the official institutions or a third party is needed, etc.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):