diff --git a/internal/services/network/vpn_gateway_connection_resource.go b/internal/services/network/vpn_gateway_connection_resource.go
index ee3a9cd6d165..d3cca4ae5d8c 100644
--- a/internal/services/network/vpn_gateway_connection_resource.go
+++ b/internal/services/network/vpn_gateway_connection_resource.go
@@ -219,7 +219,7 @@ func resourceVPNGatewayConnection() *pluginsdk.Resource {
 									"sa_data_size_kb": {
 										Type:         pluginsdk.TypeInt,
 										Required:     true,
-										ValidateFunc: validation.IntBetween(1024, 2147483647),
+										ValidateFunc: validation.IntBetween(0, 2147483647),
 									},
 									"encryption_algorithm": {
 										Type:         pluginsdk.TypeString,
diff --git a/internal/services/network/vpn_gateway_connection_resource_test.go b/internal/services/network/vpn_gateway_connection_resource_test.go
index fe7f1204e55f..faec7a71a796 100644
--- a/internal/services/network/vpn_gateway_connection_resource_test.go
+++ b/internal/services/network/vpn_gateway_connection_resource_test.go
@@ -328,7 +328,7 @@ resource "azurerm_vpn_gateway_connection" "test" {
     vpn_site_link_id = azurerm_vpn_site.test.link[0].id
     ipsec_policy {
       sa_lifetime_sec          = 300
-      sa_data_size_kb          = 1024
+      sa_data_size_kb          = 0
       encryption_algorithm     = "AES256"
       integrity_algorithm      = "SHA256"
       ike_encryption_algorithm = "AES128"
@@ -374,7 +374,7 @@ resource "azurerm_vpn_gateway_connection" "test" {
     vpn_site_link_id = azurerm_vpn_site.test.link[0].id
     ipsec_policy {
       sa_lifetime_sec          = 300
-      sa_data_size_kb          = 1024
+      sa_data_size_kb          = 0
       encryption_algorithm     = "AES256"
       integrity_algorithm      = "SHA256"
       ike_encryption_algorithm = "AES128"
@@ -738,7 +738,7 @@ resource "azurerm_vpn_gateway_connection" "test" {
 
     ipsec_policy {
       sa_lifetime_sec          = 300
-      sa_data_size_kb          = 1024
+      sa_data_size_kb          = 0
       encryption_algorithm     = "AES256"
       integrity_algorithm      = "SHA256"
       ike_encryption_algorithm = "AES128"