Exchange Distribution List Creation is taking long time

If you notice that Group creation via HC API or Panel interface is taking extra long time then please first verify Group creation manually using Exchange PowerShell command,
 
New-distributiongroup -displayName "TestGroup" -name "TestGroup@abc.com" -OrganizationalUnit "OU=MyOrg.com,DC=ad10,DC=lab03,DC=com" -Managedby "Mark@abc.com" -type "Distribution"