Changes to List pinned content

added the non-success response with the status 422

the error response's property type changed from string to object for status 400

the error response's property type changed from string to object for status 401

the error response's property type changed from string to object for status 403

the error response's property type changed from string to object for status 404

the error response's property type changed from string to object for status 500

added the optional property error/details to the response with the 400 status

added the optional property error/details to the response with the 401 status

added the optional property error/details to the response with the 403 status

added the optional property error/details to the response with the 404 status

added the optional property error/details to the response with the 500 status

added the required property error/reason to the response with the 400 status

added the required property error/reason to the response with the 401 status

added the required property error/reason to the response with the 403 status

added the required property error/reason to the response with the 404 status

added the required property error/reason to the response with the 500 status

endpoint added