Access is secured via API keys and mutual TLS.
The HTTP header must include your API Client Key to grant access to the API. This would have been provided to you as part of the NDC API Access process. Ensure that these headers are passed correctly in your HTTP connector.
We make a POST call to all of our API endpoints and below are the headers required for each API. Also we utilise a RESTful connection for API communication
Ocp-Apim-Subscription-Key: [API-KEY-VALUE] Your VS NDC API Key
Accept:application/xml
Content-Type:application/xml