Sitemap | UTF-8 Encoding Tag is not showing in index file

[AbhinavYa1]

<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">

   <sitemap>

      <loc>http://www.example.com/sitemap1.xml.gz</loc>

      <lastmod>2004-10-01T18:23:17+00:00</lastmod>

   </sitemap>

   <sitemap>

      <loc>http://www.example.com/sitemap2.xml.gz</loc>

      <lastmod>2005-01-01</lastmod>

   </sitemap>

</sitemapindex>

I am generating a sitemap but 

<?xml version="1.0" encoding="UTF-8"?>

Is not showing , what could be the issue and how to fix this?

[giuseppebag]

Please provide more information because it's impossible to guess how you create the sitemap.

[chaudharynick]

Hi @AbhinavYa1 

Can you share which AEM version are you using and how are you generating the sitemap, custom or OOTB functionality?

[kautuk_sahni]

@AbhinavYa1 Could you please share more context as asked?