Sitemaps are nothing but an Index for the website.It is recommended to upload or create a site map file only when the entire store setup is done or pages i.e categories,site pages and sub categories are created and good to go. Once you have verified your website through the Google Webmasters, the next best thing to do is create an XML Sitemap for your website. Sitemaps help Google to discover pages on your website that may not be discoverable otherwise. In the simplest of terms, a sitemap is a list of pages on your website, much like an index at the start of a book. And when you create a sitemap, you give Google an index of all your pages which makes it easier for the Mr. Know-it-All to show you up in the relevant search results.In case if the webpages or store pages are changed on regular basis then it is recommended to upload an updated sitemap file once in every 45-60 days.

Step 1: Generate  XML SiteMap for your website using any of the XML sitemap generator.Once generated Download un-compressed XML            Sitemap

Step 2: Upload the sitemap (.xml file) on your Zepo dashboard under Settings-->Advanced Features-->Google Webmaster SiteMap

Step 3: The sitemap URL would be which has to be pasted in Webmasters dashboard.

Step 4: Submit the URL to your SiteMap to your verified Google Webmasters account, to complete the process.