Cause: Misconfiguration of the DNA plugin replication settings(for getting new ranges), where a replication server is specified, but there is no agreement present for that replication server.
Consequence: The range from that remote replication server can not be obtained because the plugin tries to use the replication bind credentials from an agreement. In this case there is no agreement to that server, so it fails to get the next range.
Fix: In the DNA plugin configuration, you can now specify the replication credentials.
Result: If properly configured, there is no requirement to have a replication agreement in order to get a range from a remote replication server.