diff --git a/nucleus/principalNetworkDomain.go b/nucleus/principalNetworkDomain.go
index ebb372081a3636a2e0629200c9b56822d11981ae..88c08172e2f4c859d1a8212328a20680953e3054 100644
--- a/nucleus/principalNetworkDomain.go
+++ b/nucleus/principalNetworkDomain.go
@@ -45,7 +45,7 @@ func NewPND(name, description string, id uuid.UUID, sbi SouthboundInterface) (Pr
 		id:          id,
 	}
 	if err := pnd.sbic.add(sbi); err != nil {
-		return nil, &ErrAlreadyExists{item: sbi}
+		return nil, err
 	}
 	return pnd, nil
 }