title: Create/UpdateRecurringPaymentsProfile - can clients use their PPal Accounts
body: <p>I have looked around SO for this but I can't seem to find anything like it.</p>
  
  <p>On my service, I wish to charge on a per-month basis depending on how many users my clients have.</p>
  
  <p>So this question is split up into two parts.</p>
  
  <ol>
  <li><p>What I want to know is it possible for a client to use their own paypal account (without entering any CC details) with conjunction with <strong>CreateRecurringPaymentsProfile</strong> via the <strong>NVP</strong>, I have looked through the documentation and can not discern anything. So clearly it is not possible to do it via NPV - From what I've seen so far.</p>
  
  <p>i. If I do an Express-Checkout Subscription, I can do 20% change on total amount every 180 days (<strong>I DO NOT</strong> want to do this) - I want to be able to get the Profile via the IPN and then modify the monthly amount on as-need basis</p>
  
  <p>ii. There was some mention of Referenced Transactions, but the Documentation is very confusing.</p></li>
  <li><p>So say there is a way to create a recurring payment subscription via a PayPal Account on the PayPal website, next step is to be able to update the Subscription via <strong>UpdateRecurringPaymentsProfile</strong> NVP command.</p></li>
  </ol>
  
  <p>While I am happy to pass on CC details (which already works great), I am just wondering if it is indeed possible create a button, which would create a Subscription - once on success an IPN request is sent back with the ProfileID which I can modify the Billing Amount by NVP.</p>
  
  <p>So TL;DR;</p>
  
  <p>The current flow I have</p>
  
  <ol>
  <li>Register on our website </li>
  <li>Enter CC Details</li>
  <li>Backend submits the data to PayPal and if passed - continues on.</li>
  <li>On any Account modifications, update Profile Monthly Amount Automatically.</li>
  </ol>
  
  <p>The flow I want</p>
  
  <ol>
  <li>Register on website</li>
  <li>Click on an Authorize Button Redirected to PayPal</li>
  <li>Login to their PayPal Account Create Recurring Profile. </li>
  <li>On any Account modifications, update that Profile Monthly Amount Automatically.</li>
  </ol>
  
  <p><em>edit to add</em> - this is all working now, had to contact and harass PayPal directly for a lonngg time.</p>