Dell Unity: Replication interface creation failed (Error Code: 0x1900000011) (User Correctable)

While creating the Replication Interface an error is encountered "The specified Network interface could not be created."

B  16f8015 [ERROR] System: NAS Server network interface xx_CKMxx123456789 failed while being created. NAS Server NetIF 0x1900000011 failed create interface request with status 0x10
A  6200fb [ERROR] Audit: Creation of Replication Interface xx.xx.xx.xx initiated by User local/admin failed.

This may be because the network configuration settings inside the Unity storage are causing a problem or may be a customer network configuration issue.

Synchronous
Verify the Sync Management IPs are configured and correct network parameters are set.
Verify the Sync Replication FC port zoning completed.
Verify Management IPs and Sync Management IPs between site is reachable.
Verify the management switch properties to allow more than 2 MAC addresses per physical port.

Asynchronous
Verify the Replication interface IPs are configured, and correct network parameters are set.
Verify Management IPs and Replication interface IPs between site is reachable.

Network Ports
 Verify all the required TCP ports are enabled in the customer network environment to enable communication between sites. 

The access direction depends on the replication configuration. Suggested to have "bi-directional" to enable reverse replication without any issues during the Failover activity or during the bi-directional replication configuration.