NISS is an independent research institute dedicated to strengthening and serving the national statistics community. As a service and example to this community, NISS has begun to develop a set of web services. So far, they've complete the NISS Webswap API, which swaps one or more attributes between user-specified records in a microdata file, uploading the original data file from the user's computer and downloading the file containing the swapped records. This API uses SOAP calls issued in XML format.
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So far, we don't have a record of any changes to this API