diff --git a/go/gosdn/core/core.pb.go b/go/gosdn/core/core.pb.go
index 01dee433e54d97e038af932155b01c6a23fc3eef..0df5db9352fe3437585aabcdcb80c400fd657f7f 100644
--- a/go/gosdn/core/core.pb.go
+++ b/go/gosdn/core/core.pb.go
@@ -233,8 +233,8 @@ type GetPndResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Timestamp int64                       `protobuf:"varint,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"` // Timestamp in nanoseconds since Epoch.
-	Pnd       *pnd.PrincipalNetworkDomain `protobuf:"bytes,2,opt,name=pnd,proto3" json:"pnd,omitempty"`
+	Timestamp int64                         `protobuf:"varint,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"` // Timestamp in nanoseconds since Epoch.
+	Pnd       []*pnd.PrincipalNetworkDomain `protobuf:"bytes,2,rep,name=pnd,proto3" json:"pnd,omitempty"`
 }
 
 func (x *GetPndResponse) Reset() {
@@ -276,7 +276,7 @@ func (x *GetPndResponse) GetTimestamp() int64 {
 	return 0
 }
 
-func (x *GetPndResponse) GetPnd() *pnd.PrincipalNetworkDomain {
+func (x *GetPndResponse) GetPnd() []*pnd.PrincipalNetworkDomain {
 	if x != nil {
 		return x.Pnd
 	}
@@ -591,7 +591,7 @@ var file_gosdn_core_core_proto_rawDesc = []byte{
 	0x70, 0x6e, 0x64, 0x22, 0x63, 0x0a, 0x0e, 0x47, 0x65, 0x74, 0x50, 0x6e, 0x64, 0x52, 0x65, 0x73,
 	0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x1c, 0x0a, 0x09, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61,
 	0x6d, 0x70, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x09, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74,
-	0x61, 0x6d, 0x70, 0x12, 0x33, 0x0a, 0x03, 0x70, 0x6e, 0x64, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b,
+	0x61, 0x6d, 0x70, 0x12, 0x33, 0x0a, 0x03, 0x70, 0x6e, 0x64, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b,
 	0x32, 0x21, 0x2e, 0x67, 0x6f, 0x73, 0x64, 0x6e, 0x2e, 0x70, 0x6e, 0x64, 0x2e, 0x50, 0x72, 0x69,
 	0x6e, 0x63, 0x69, 0x70, 0x61, 0x6c, 0x4e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x44, 0x6f, 0x6d,
 	0x61, 0x69, 0x6e, 0x52, 0x03, 0x70, 0x6e, 0x64, 0x22, 0x67, 0x0a, 0x14, 0x43, 0x72, 0x65, 0x61,
diff --git a/openapiv2/gosdn_northbound.swagger.json b/openapiv2/gosdn_northbound.swagger.json
index e090bc2d5ce537854a4b1fea64efabe4796b002b..a769928087055130cd117d7f51c59d8490ee805c 100644
--- a/openapiv2/gosdn_northbound.swagger.json
+++ b/openapiv2/gosdn_northbound.swagger.json
@@ -18,19 +18,19 @@
       "name": "PndService"
     },
     {
-      "name": "Collector"
+      "name": "gNMI"
     },
     {
-      "name": "gNMI"
+      "name": "AgentManager"
     },
     {
       "name": "CoreService"
     },
     {
-      "name": "AgentManager"
+      "name": "CsbiService"
     },
     {
-      "name": "CsbiService"
+      "name": "Collector"
     }
   ],
   "consumes": [
@@ -822,7 +822,10 @@
           "format": "int64"
         },
         "pnd": {
-          "$ref": "#/definitions/pndPrincipalNetworkDomain"
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/pndPrincipalNetworkDomain"
+          }
         }
       }
     },
diff --git a/proto/gosdn/core/core.proto b/proto/gosdn/core/core.proto
index affbac00af644aa6a75dc5fcc9ff72ef386ea0f6..b5ad8c013a4170cd660d6498ec2d8547e4b0d249 100644
--- a/proto/gosdn/core/core.proto
+++ b/proto/gosdn/core/core.proto
@@ -51,7 +51,7 @@ message GetPndListResponse {
 
 message GetPndResponse {
   int64 timestamp = 1;          // Timestamp in nanoseconds since Epoch.
-  .gosdn.pnd.PrincipalNetworkDomain pnd = 2;
+  repeated .gosdn.pnd.PrincipalNetworkDomain pnd = 2;
 }
 
 message CreatePndListRequest {