3.2.5.1.1 POST
The POST message, including request and response body information, is defined in section 3.1.5.1.1 and subsections.
When the client receives the response from the POST message, it SHOULD<3> check for the pctx property. If this property exists in the response, the client stores its value in the Data Store Information abstract data model element (section 3.2.1).