I'm currently importing records into Business Central via the API, and need to be able to import the sales tax amount calculated at the time and date of the original order. This is coming from multiple systems using different tax engines. It's functionally impossible to set up custom tax codes for every single order, and using an external service essentially doubles our cost (as we are already making the API calls to calculate sales tax on checkout). What is the recommended way to manually add sales tax to a sales order and sales invoice? Additionally, what is the proper way to post those Sales Orders or Sales Invoices through the Business Central API?
