diff --git a/docs/resources/sqlserverflex_instance.md b/docs/resources/sqlserverflex_instance.md
index 5e1e519f..aeb3643d 100644
--- a/docs/resources/sqlserverflex_instance.md
+++ b/docs/resources/sqlserverflex_instance.md
@@ -73,9 +73,12 @@ Read-Only:
 
 Optional:
 
-- `edition` (String)
 - `retention_days` (Number)
 
+Read-Only:
+
+- `edition` (String)
+
 
 <a id="nestedatt--storage"></a>
 ### Nested Schema for `storage`
diff --git a/stackit/internal/services/sqlserverflex/instance/resource.go b/stackit/internal/services/sqlserverflex/instance/resource.go
index 7b6009e0..7c32bba8 100644
--- a/stackit/internal/services/sqlserverflex/instance/resource.go
+++ b/stackit/internal/services/sqlserverflex/instance/resource.go
@@ -292,7 +292,6 @@ func (r *instanceResource) Schema(_ context.Context, _ resource.SchemaRequest, r
 				},
 				Attributes: map[string]schema.Attribute{
 					"edition": schema.StringAttribute{
-						Optional: true,
 						Computed: true,
 						PlanModifiers: []planmodifier.String{
 							stringplanmodifier.RequiresReplace(),
@@ -695,9 +694,7 @@ func mapFields(ctx context.Context, resp *sqlserverflex.GetInstanceResponse, mod
 		edition := options.Edition
 		editionValue, ok := (*instance.Options)["edition"]
 		if ok {
-			// API returns edition in uppercase but validates if it is lowercase
-			// This is a workaround that should be removed when the API is fixed
-			edition = types.StringValue(strings.ToLower(editionValue))
+			edition = types.StringValue(editionValue)
 		}
 
 		optionsValues = map[string]attr.Value{
diff --git a/stackit/internal/services/sqlserverflex/sqlserverflex_acc_test.go b/stackit/internal/services/sqlserverflex/sqlserverflex_acc_test.go
index c630963e..a727477b 100644
--- a/stackit/internal/services/sqlserverflex/sqlserverflex_acc_test.go
+++ b/stackit/internal/services/sqlserverflex/sqlserverflex_acc_test.go
@@ -30,7 +30,6 @@ var instanceResource = map[string]string{
 	"storage_size":            "40",
 	"version":                 "2022",
 	"replicas":                "1",
-	"options_edition":         "standard",
 	"options_retention_days":  "64",
 	"flavor_id":               "4.16-Single",
 	"backup_schedule":         "00 6 * * *",
@@ -55,7 +54,6 @@ func configResources(backupSchedule string) string {
 					}
 					version = "%s"
 					options = {
-						edition = "%s"
 						retention_days = %s
 					}
 					backup_schedule = "%s"
@@ -70,7 +68,6 @@ func configResources(backupSchedule string) string {
 		instanceResource["storage_class"],
 		instanceResource["storage_size"],
 		instanceResource["version"],
-		instanceResource["options_edition"],
 		instanceResource["options_retention_days"],
 		backupSchedule,
 	)
@@ -99,7 +96,6 @@ func TestAccSQLServerFlexResource(t *testing.T) {
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "storage.class", instanceResource["storage_class"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "storage.size", instanceResource["storage_size"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "version", instanceResource["version"]),
-					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "options.edition", instanceResource["options_edition"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "options.retention_days", instanceResource["options_retention_days"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "backup_schedule", instanceResource["backup_schedule"]),
 				),
@@ -135,7 +131,6 @@ func TestAccSQLServerFlexResource(t *testing.T) {
 					resource.TestCheckResourceAttr("data.stackit_sqlserverflex_instance.instance", "flavor.cpu", instanceResource["flavor_cpu"]),
 					resource.TestCheckResourceAttr("data.stackit_sqlserverflex_instance.instance", "flavor.ram", instanceResource["flavor_ram"]),
 					resource.TestCheckResourceAttr("data.stackit_sqlserverflex_instance.instance", "replicas", instanceResource["replicas"]),
-					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "options.edition", instanceResource["options_edition"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "options.retention_days", instanceResource["options_retention_days"]),
 					resource.TestCheckResourceAttr("data.stackit_sqlserverflex_instance.instance", "backup_schedule", instanceResource["backup_schedule"]),
 				),
@@ -186,7 +181,6 @@ func TestAccSQLServerFlexResource(t *testing.T) {
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "storage.class", instanceResource["storage_class"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "storage.size", instanceResource["storage_size"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "version", instanceResource["version"]),
-					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "options.edition", instanceResource["options_edition"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "options.retention_days", instanceResource["options_retention_days"]),
 					resource.TestCheckResourceAttr("stackit_sqlserverflex_instance.instance", "backup_schedule", instanceResource["backup_schedule_updated"]),
 				),