Shopify/active_merchant — pull request #566 by cwise (2013-01-30 17:15:36+00:00)
Title: Added support for passing on_behalf_of_uri for capture in Balanced Payments

Balanced Payments offers the ability to associate a merchant with a transaction on the capture of a previously authorized transaction. The parameter is called on_behalf_of_uri. The parameter is not echoed back in their response.