diff --git a/vpc-transit-gateway-association/README.md b/vpc-transit-gateway-association/README.md
index 9789194..c57b95c 100644
--- a/vpc-transit-gateway-association/README.md
+++ b/vpc-transit-gateway-association/README.md
@@ -26,6 +26,7 @@ module "vpc_tgw" {
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 3.66.0 |
+| <a name="provider_aws.network_account"></a> [aws.network\_account](#provider\_aws.network\_account) | >= 3.66.0 |
 | <a name="provider_aws.tgw_east"></a> [aws.tgw\_east](#provider\_aws.tgw\_east) | >= 3.66.0 |
 | <a name="provider_aws.tgw_west"></a> [aws.tgw\_west](#provider\_aws.tgw\_west) | >= 3.66.0 |
 
@@ -38,7 +39,9 @@ No modules.
 | Name | Type |
 |------|------|
 | [aws_arn.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/arn) | data source |
+| [aws_arn.network_account](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/arn) | data source |
 | [aws_caller_identity.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
+| [aws_caller_identity.network_account](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
 | [aws_ec2_transit_gateway.tgw_east](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ec2_transit_gateway) | data source |
 | [aws_ec2_transit_gateway.tgw_west](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ec2_transit_gateway) | data source |
 | [aws_iam_account_alias.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_account_alias) | data source |
diff --git a/vpc-transit-gateway-association/data.network_account.tf b/vpc-transit-gateway-association/data.network_account.tf
new file mode 100644
index 0000000..d0ef9c1
--- /dev/null
+++ b/vpc-transit-gateway-association/data.network_account.tf
@@ -0,0 +1,12 @@
+data "aws_caller_identity" "network_account" {
+  provider = aws.network_account
+}
+
+data "aws_arn" "network_account" {
+  provider = aws.network_account
+  arn      = data.aws_caller_identity.network_account.arn
+}
+
+# output "network_account" {
+#   value = data.aws_arn.network_account
+# }