The sale parameters are returned to your return URL (approved URL) at the end of each sale. If you are updating your database with this information the return URL must use a script that processes the returned sale parameters. The parameters returned depend on the parameter set being used to start the sale. You will receive back the parameters listed in the articles below for the parameter set that you choose to use. In addition, there are some parameter names at the bottom of the articles that will also be returned. If you pass any parameters to our system that are not used by us, they will be returned as-is with the rest of the parameters at the end of the sale. Parameter information will typically be returned by POST, however parameters will be converted from POST to GET if the Header Redirect method is used or the Plug n Play parameter set is used and multiple products are purchased at the same time.
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