I am making a call to GetSellerList, but I do not get back the attribute information in the Item Object. Why is the AttributeSetArray not being populated and returned?
Not all calls return all the elements for container. For instance,
GetSellerList returns the Item container, but it does not return all the
properties of the ItemType object. To find out what information is returned
for a call, you need to look at the Input / Output reference for the call.
Think of the information returned in a call as being
message driven. There is a common information
model, but depending on the functionality offered by a call, the relevant information is returned for that
call. For instance, the goal of GetSellerList is to primarily return all
the Items for a given seller in an optimal manner. The chief use of this
call would be to sync your database with that of eBay's, and not to get all the
relevant information about an item. Hence it does not return things like
the attributes (item specifics) for the items. If you need to get the
attribute information, then you would need to make a call to GetItem for each
individual item that is of interest. Similarly, GetItem returns the
information about an item, but not the transactional information for the item -
for that you would need to use calls like GetSellerTransactions.
Besides what is returned in a call, the amount of information returned is controlled by the
DetailLevel / GranularityLevel. You can use this effectively to reduce the
amount of information returned and make your application efficient. For
instance, if you need to find out all the items for a seller with just the
ItemIDs, then do not send in any DetailLevel or GranularityLevel in the
GetSellerList call. The response will return the ItemID, StartTime and
EndTime and it will be very fast compared to setting a DetailLevel of ReturnAll.
Here is how you can use
Input / Output reference
Enumeration Index: for a list of enumeration types & values and which
calls use them
Type Index: for a list of all the types used in the schema
To find out if a call supports DetailLevel / GranularityLevel, and what is returned at each level, check the Best
Practices section in the
for that call.