Authorization is made by including the header Authorization in the API request. The value should be “Bearer” and an active Access-Token for the user.
Type of content
Fortnox API supports both JSON and XML. You will need to use the header fields Content-Type and Accept to specify which type you use.
The value for these header fields should be either application/json or application/xml depending on which you use.
For requests where the content is a file, like in archive or inbox, a special content-type is used, this type is multipart/form-data. The header field “accept” should still be either JSON or XML, this specifies in which format you want the return data to be in.