POST is not creating a Tax class in Magento2 API

Question

Unable to create a new Tax Class using POST call end point -> http://magentohost/rest/default/V1/taxClasses

While creating a new Tax class using API /V1/taxClasses under taxTaxClassRepositoryV1 from the link http://devdocs.magento.com/swagger/index.html#/

The request which I am sending has a header with Content-Type and Authorization and body as below in JSON format,

{ "taxClass": { "class_id": 6, "class_name": "newcustomer", "class_type": "CUSTOMER", "extension_attributes": {} } }

The response which I get is

{
  "message": "No such entity with %fieldName = %fieldValue",
  "parameters": {
  "fieldName": "class_id",
  "fieldValue": 6
  }
}

Answer 1

I don't believe you can manually specify the class_id when creating a new tax class. The existence of a class_id will make the repositories save method attempt to load an entity with that ID and update it. If you remove the class_id field from you're request, I believe it will work.