This value represents the date and time when eBay processed the
request. The time zone of this value is GMT and the format is the
ISO 8601 date and time format (YYYY-MM-DDTHH
MM
SS.SSSZ). See Time
Values in the eBay Web Services guide for information about this
time format and converting to and from the GMT time zone. Certain
calls, such as GetCategories, can return very large responses that
change once a day or less often. For better performance, such calls
may return cached data. In these cases, this time value reflects the
time the cached response was created. Thus, this value is not
necessarily within a few seconds of the time you submitted the
request.
These are the meta-data calls that can return cached responses
GetCategories, GetAttributesCS, GetCategory2CS, GetAttributesXsl,
GetProductFinder, GetProductFinderXsl, and GetProductSearchPage.