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Might we suggest you try the 'Redirect Payment Page' before you go the Enterprise API route. Here is why: We did most of the heavy lifting already. It should be as easy as crafting a SOAP message and exposing a web service that PayU can call to update your order's payment status. If you don't believe me take a look at the github examples. This is a very good starting point for those of you who are looking at using EasyMerchant Easy Merchant and PayU Business.
c) Processing payments from a mobile platform - Mobile platform SDK's
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