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Get a List of Objects If Metadata Has Changed

Use the Describe Global resource and the If-Modified-Since HTTP header to determine if an object’s metadata has changed.

You can include the If-Modified-Since header with a date in EEE, dd MMM yyyy HH:mm:ss z format when you use the Describe Global resource. If you do, response metadata is returned only if an available object’s metadata has changed since the provided date. If no metadata has been modified since the provided date, a 304 Not Modified status code is returned with no response body.

The following example assumes that no changes have been made to objects after March 23, 2015.

If changes to an object were made after March 23, 2015, the response body contains metadata for all available objects. For an example, see Get a List of Objects.

Example Describe Global request

/services/data/v67.0/sobjects

Example If-Modified-Since header used with request

If-Modified-Since: Tue, 23 Mar 2015 00:00:00 GMT

Example response body

No response body returned

Example response status code

1HTTP/1.1 304 Not Modified
2Date: Wed, 25 Jul 2015 00:05:46 GMT

REST API Developer Guide

Get a List of Objects If Metadata Has Changed

Example Describe Global request

Example If-Modified-Since header used with request

Example response body

Example response status code