diff --git a/4-projects/business_unit_1/development/main.tf b/4-projects/business_unit_1/development/main.tf
index 8fbef4697..b2efde30d 100644
--- a/4-projects/business_unit_1/development/main.tf
+++ b/4-projects/business_unit_1/development/main.tf
@@ -25,8 +25,8 @@ module "env" {
   location_gcs        = coalesce(var.location_gcs, local.default_region_gcs)
   gcs_custom_placement_config = {
     data_locations = [
-      local.default_region,
-      local.default_region_2,
+      upper(local.default_region),
+      upper(local.default_region_2),
     ]
   }
   tfc_org_name                 = var.tfc_org_name
diff --git a/4-projects/business_unit_1/nonproduction/main.tf b/4-projects/business_unit_1/nonproduction/main.tf
index 34eb15998..f27846001 100644
--- a/4-projects/business_unit_1/nonproduction/main.tf
+++ b/4-projects/business_unit_1/nonproduction/main.tf
@@ -25,8 +25,8 @@ module "env" {
   location_gcs        = coalesce(var.location_gcs, local.default_region_gcs)
   gcs_custom_placement_config = {
     data_locations = [
-      local.default_region,
-      local.default_region_2,
+      upper(local.default_region),
+      upper(local.default_region_2),
     ]
   }
   tfc_org_name                 = var.tfc_org_name
diff --git a/4-projects/business_unit_1/production/main.tf b/4-projects/business_unit_1/production/main.tf
index ac4336832..cdc136052 100644
--- a/4-projects/business_unit_1/production/main.tf
+++ b/4-projects/business_unit_1/production/main.tf
@@ -25,8 +25,8 @@ module "env" {
   location_gcs        = coalesce(var.location_gcs, local.default_region_gcs)
   gcs_custom_placement_config = {
     data_locations = [
-      local.default_region,
-      local.default_region_2,
+      upper(local.default_region),
+      upper(local.default_region_2),
     ]
   }
   tfc_org_name                 = var.tfc_org_name
diff --git a/4-projects/business_unit_2/development/main.tf b/4-projects/business_unit_2/development/main.tf
index 0a1980132..4a11b5410 100644
--- a/4-projects/business_unit_2/development/main.tf
+++ b/4-projects/business_unit_2/development/main.tf
@@ -25,8 +25,8 @@ module "env" {
   location_gcs        = coalesce(var.location_gcs, local.default_region_gcs)
   gcs_custom_placement_config = {
     data_locations = [
-      local.default_region,
-      local.default_region_2,
+      upper(local.default_region),
+      upper(local.default_region_2),
     ]
   }
   tfc_org_name                 = var.tfc_org_name
diff --git a/4-projects/business_unit_2/nonproduction/main.tf b/4-projects/business_unit_2/nonproduction/main.tf
index 197cf1a00..ce448604a 100644
--- a/4-projects/business_unit_2/nonproduction/main.tf
+++ b/4-projects/business_unit_2/nonproduction/main.tf
@@ -25,8 +25,8 @@ module "env" {
   location_gcs        = coalesce(var.location_gcs, local.default_region_gcs)
   gcs_custom_placement_config = {
     data_locations = [
-      local.default_region,
-      local.default_region_2,
+      upper(local.default_region),
+      upper(local.default_region_2),
     ]
   }
   tfc_org_name                 = var.tfc_org_name
diff --git a/4-projects/business_unit_2/production/main.tf b/4-projects/business_unit_2/production/main.tf
index d57d10e09..b8be1b787 100644
--- a/4-projects/business_unit_2/production/main.tf
+++ b/4-projects/business_unit_2/production/main.tf
@@ -25,8 +25,8 @@ module "env" {
   location_gcs        = coalesce(var.location_gcs, local.default_region_gcs)
   gcs_custom_placement_config = {
     data_locations = [
-      local.default_region,
-      local.default_region_2,
+      upper(local.default_region),
+      upper(local.default_region_2),
     ]
   }
   tfc_org_name                 = var.tfc_org_name