title: Walmart Marketplace API Integration and Authentication
body: <p>I am working on integrating my application Walmart Marketplace API using Ruby on Rails.  </p>
  
  <p>  1.   if i try to generate Auth signature for multiple parameters, it does not generate it and returns exceptions. I am using a Jar file to  generate Auth signature</p>
  
  <pre><code>     For e.g. -: https://marketplace.walmartapis.com/v3/orders?createdStartDate=2016-09-13&amp;createdEndDate=2016-09-23 
       Does anyone generate Auth Signature &amp; timestamp for multiple parameter for Walmart Marketplace API
  </code></pre>
  
  <p>   2. Does Auth Signature &amp; timestamp need to be generated for each API call   for e.g . Pagination call Also?</p>
  
  <ol start="3">
  <li>Does Authentication need to do for each call?  </li>
  </ol>