304 status code handling

The SMC API supports the 304 Not Modified Error status code as a result of a GET request with the If-None-Match header parameter. This response indicates that the resource has not been modified since the version specified by the If-Modified-Since or If-None-Match request headers.

There is no need to retransmit the resource because the requested element has not been modified and the client still has a previously downloaded copy. For example, if you add your ETag element version to the If-None-Match parameter in the header of your GET request, the SMC API returns a 304 status code instead of the element content. This response indicates that your downloaded copy of the element is the same as the requested element.