@raghavendra v
Ambari Blueprints are used to create clusters based on the Blueprint template. Using blueprint we can not make configuration changes to an existing cluster.
It means if you have the Production Cluster Blueprint (exported blueprint) then using that blueprint (cluster configuration) you can create new clusters, However you can not make cluster configuration changes using blueprint.
Ambari Blueprints are a declarative definition of a cluster. With a Blueprint, you specify aStack, the Component layout and the Configurations to materialize a Hadoop cluster instance (via a REST API) without having to use the Ambari Cluster Install Wizard.
https://cwiki.apache.org/confluence/display/AMBARI/Blueprints