I've just started to specify an integration towards Visma.net When you create a customer in our system I would like to create it in Visma.net. Usually when we integrate towards ERPs we let the user decide if the ERP should be master of serial numbers or not. If the ERP is supposed to be the master of serial numbers, I need to get back what number it was given when created.   Working with other REST API's, the information about the created object is usually returned in the response when making a POST call. Is there a parameter I can send to get information back in the response or another best practice of how to retrieve serial numbers created in Visma.net when making POST calls? We will also export invoices and would like to save the given invoice number in our system. ... View more