Extended coverage
Extended coverage means that one single license covers two installations of the same application on two separate computers or datacenters/clusters. Extended coverage is used for passive cluster nodes, disaster recovery test/development environments, and/or for a customer specific reason i.e. a customer specific agreement with extended user rights of the product.
You need to specify the computer or datacenter/cluster the coverage should be extended to, for which application, and for what reason, see Edit computer (Computers) and Add datacenter and cluster (Datacenters and clusters).