The <code>PUT</code> method requires one to sent the complete record, thus the work-flow is normally as follows:
# A [[#Reseller_retrieval_Reseller_element_retrieval_.28GET.29|GET]] request on the Reseller element URI will be made to fetch the whole document.
# Update the fields which content has changed
# Send a <code>PUT</code> request with all the reseller data