Change payload body to message content and Status code 422 description

    Check HTTP Response Status Code Is    400

    Check HTTP Response Body Json Schema Is   ProblemDetails 

POST Create a new Subscription - Unprocessable Entity

POST Create a new Subscription - Unprocessable Content

    [Documentation]    Test ID: 7.3.6.4.13

    ...    Test title: POST Create a new Subscription - Unprocessable Entity

    ...    Test objective: The objective is to test that content type of the payload body is supported and the payload body of a request contains syntactically correct data but the data cannot be processed.

    ...    Test title: POST Create a new Subscription - Unprocessable Content

    ...    Test objective: The objective is to test that content type of the message content is supported and the message content of a request contains syntactically correct data but the data cannot be processed.

    ...    re-conditions: none

    ...    Reference: Clause 8.4.5.3.1 - ETSI GS NFV-SOL 003 [1] v4.4.1

    ...    Config ID: Config_prod_VNFM