diff --git a/vpc-transit-gateway-association/peer/README.md b/vpc-transit-gateway-association/peer/README.md
index 6977818..af5df57 100644
--- a/vpc-transit-gateway-association/peer/README.md
+++ b/vpc-transit-gateway-association/peer/README.md
@@ -82,7 +82,9 @@ No modules.
 | [aws_ec2_transit_gateway_peering_attachment.attachment_peer](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ec2_transit_gateway_peering_attachment) | data source |
 | [aws_ec2_transit_gateway_peering_attachment.attachment_self](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ec2_transit_gateway_peering_attachment) | data source |
 | [aws_iam_account_alias.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_account_alias) | data source |
+| [aws_iam_account_alias.network_account](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_account_alias) | data source |
 | [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
+| [aws_region.network_account](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
 | [aws_vpc.vpc](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/vpc) | data source |
 
 ## Inputs
diff --git a/vpc-transit-gateway-association/peer/data.network_account.tf b/vpc-transit-gateway-association/peer/data.network_account.tf
index d0ef9c1..6525b55 100644
--- a/vpc-transit-gateway-association/peer/data.network_account.tf
+++ b/vpc-transit-gateway-association/peer/data.network_account.tf
@@ -7,6 +7,10 @@ data "aws_arn" "network_account" {
   arn      = data.aws_caller_identity.network_account.arn
 }
 
-# output "network_account" {
-#   value = data.aws_arn.network_account
-# }
+data "aws_region" "network_account" {
+  provider = aws.network_account
+}
+
+data "aws_iam_account_alias" "network_account" {
+  provider = aws.network_account
+}
diff --git a/vpc-transit-gateway-association/self/README.md b/vpc-transit-gateway-association/self/README.md
index 625ccf2..9b8d431 100644
--- a/vpc-transit-gateway-association/self/README.md
+++ b/vpc-transit-gateway-association/self/README.md
@@ -73,6 +73,7 @@ module "vpc_tgw_self" {
 
 | Name | Type |
 |------|------|
+| [aws_ec2_tag.vpc_sttachment](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_tag) | resource |
 | [aws_ec2_transit_gateway_route_table_association.route_table_self](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway_route_table_association) | resource |
 | [aws_ec2_transit_gateway_route_table_propagation.vpc_self_common](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway_route_table_propagation) | resource |
 | [aws_ec2_transit_gateway_route_table_propagation.vpc_self_own_rt](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway_route_table_propagation) | resource |
@@ -89,7 +90,9 @@ module "vpc_tgw_self" {
 | [aws_ec2_transit_gateway_peering_attachment.attachment_peer](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ec2_transit_gateway_peering_attachment) | data source |
 | [aws_ec2_transit_gateway_peering_attachment.attachment_self](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ec2_transit_gateway_peering_attachment) | data source |
 | [aws_iam_account_alias.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_account_alias) | data source |
+| [aws_iam_account_alias.network_account](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_account_alias) | data source |
 | [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
+| [aws_region.network_account](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
 | [aws_vpc.vpc](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/vpc) | data source |
 
 ## Inputs
diff --git a/vpc-transit-gateway-association/self/associate.tf b/vpc-transit-gateway-association/self/associate.tf
index 5b9f9cb..5dc632a 100644
--- a/vpc-transit-gateway-association/self/associate.tf
+++ b/vpc-transit-gateway-association/self/associate.tf
@@ -21,6 +21,16 @@ resource "aws_ec2_transit_gateway_vpc_attachment" "vpc_attachment" {
   )
 }
 
+# tag in network account
+resource "aws_ec2_tag" "vpc_sttachment" {
+  provider = aws.self
+
+  resource_id = aws_ec2_transit_gateway_vpc_attachment.vpc_attachment.id
+  key         = "Name"
+  #  value       = format("%v:%v:%v", data.aws_iam_account_alias.network_account.account_alias,var.vpc_full_name, data.aws_region.network_account.name)
+  value = format("%v:%v", data.aws_iam_account_alias.network_account.account_alias, var.vpc_full_name)
+}
+
 output "vpc_attachment_id" {
   description = "Transit Gateway VPC Attachment ID for this VPC"
   value       = aws_ec2_transit_gateway_vpc_attachment.vpc_attachment.id
diff --git a/vpc-transit-gateway-association/self/data.network_account.tf b/vpc-transit-gateway-association/self/data.network_account.tf
index d0ef9c1..6525b55 100644
--- a/vpc-transit-gateway-association/self/data.network_account.tf
+++ b/vpc-transit-gateway-association/self/data.network_account.tf
@@ -7,6 +7,10 @@ data "aws_arn" "network_account" {
   arn      = data.aws_caller_identity.network_account.arn
 }
 
-# output "network_account" {
-#   value = data.aws_arn.network_account
-# }
+data "aws_region" "network_account" {
+  provider = aws.network_account
+}
+
+data "aws_iam_account_alias" "network_account" {
+  provider = aws.network_account
+}