title: paypal echecks need some explanation
body: <p>I have read a lot of stuff and spent hours on studying the PPs API.</p>
  
  <p>There is one thing I don't understand and would like to know how can I do this.</p>
  
  <p>When sender sends money form the bank account (not cc) it's called echeck and it takes up to 5 days.
  In some places I can see that people say</p>
  
  <ul>
  <li>you can't cancel echeck once it's approved. you can only ask seller to cancel your request/ payment.
  but on some other sites I can read</li>
  <li>buyer can cancel transfer any time, so do not ship the items untill you get final confirmation.</li>
  </ul>
  
  <p>So what's the final answer here, can the buyer cancell the echeck/ transfer or not?
  What if they approve it, but after one minute get rid of all the money form the account, and there is nothing they can be charged for?</p>
  
  <p>And the second question: I can see that in the account setting you can disable acceptance od echecks. but how can this be done via API? I mean on my website I will have different sellers and I can't check if they have echeck enabled or not, so I would like to block echecks automatically via api. So, how can I block echecks using API</p>