Specifies the number of the page of data to return in the response. Default is 1 for most calls. For some calls, the default is 0. Specify a positive value equal to or lower than the number of pages available (which you determine by examining the results of your initial request). See the documentation for other individual calls to determine the correct default value. For GetOrders, PageNumber is only applicable to Half.com (is not applicable to eBay.com).
See the
Field Index to learn which calls use PageNumber.