Detail levels are instructions that define standard subsets of data to return for
particular data components (e.g., each Item, Transaction, or User) within the response payload.
For example, a particular detail level might cause the response to include buyer-related
data in every result (e.g., for every Item), but no seller-related data.
Specifying a detail level is like using a predefined attribute list in the SELECT clause of
an SQL query. Use the DetailLevel element to specify the required detail level that
the client application needs pertaining to the data components that are applicable for the request.
The DetailLevelCodeType defines the global list of available detail levels for
all request types. Most request types support certain detail levels or none at all.
If you pass a detail level that exists in the schema but that isn't valid for a
particular request, eBay will ignore it and your request will still be processed.
For each request type, see the eBay Web Services guide to determine which detail levels
are applicable and which elements are returned for each applicable detail level.
Note that DetailLevel is required input for GetMyMessages.