diff --git a/.changelog/9708.txt b/.changelog/9708.txt
new file mode 100644
index 00000000000..dac8e66d053
--- /dev/null
+++ b/.changelog/9708.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+servicemanagement: fixed issue in `google_endpoints_service` where an inconsistent plan would be created when certain fields had computed values 
+```
diff --git a/google/services/servicemanagement/resource_endpoints_service.go b/google/services/servicemanagement/resource_endpoints_service.go
index 6c75318c2a8..e21bf18b9e6 100644
--- a/google/services/servicemanagement/resource_endpoints_service.go
+++ b/google/services/servicemanagement/resource_endpoints_service.go
@@ -159,6 +159,10 @@ func predictServiceId(_ context.Context, d *schema.ResourceDiff, meta interface{
 	if !d.HasChange("openapi_config") && !d.HasChange("grpc_config") && !d.HasChange("protoc_output_base64") {
 		return nil
 	}
+	if !d.NewValueKnown("openapi_config") || !d.NewValueKnown("grpc_config") || !d.NewValueKnown("protoc_output_base64") {
+		d.SetNewComputed("config_id")
+		return nil
+	}
 	baseDate := time.Now().Format("2006-01-02")
 	oldConfigId := d.Get("config_id").(string)
 	if match, err := regexp.MatchString(`\d\d\d\d-\d\d-\d\dr\d*`, oldConfigId); !match || err != nil {
diff --git a/google/services/servicemanagement/resource_endpoints_service_test.go b/google/services/servicemanagement/resource_endpoints_service_test.go
index 561fb6ad603..875ba6e2ea3 100644
--- a/google/services/servicemanagement/resource_endpoints_service_test.go
+++ b/google/services/servicemanagement/resource_endpoints_service_test.go
@@ -60,6 +60,52 @@ func TestAccEndpointsService_grpc(t *testing.T) {
 	})
 }
 
+func TestAccEndpointsService_grpcNotPreComputeConfigIdByGrpcConfig(t *testing.T) {
+	t.Parallel()
+	prj := envvar.GetTestProjectFromEnv()
+	parent := fmt.Sprintf("projects/%s", prj)
+	serviceId := "tf-test" + acctest.RandString(t, 10)
+
+	acctest.VcrTest(t, resource.TestCase{
+		PreCheck:                 func() { acctest.AccTestPreCheck(t) },
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories(t),
+		CheckDestroy:             testAccCheckEndpointServiceDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccEndpointsService_grpcNotPreComputeConfigIdByGrpcConfig(serviceId, envvar.GetTestProjectFromEnv(), parent, "1"),
+				Check:  testAccCheckEndpointExistsByName(t, serviceId),
+			},
+			{
+				Config: testAccEndpointsService_grpcNotPreComputeConfigIdByGrpcConfig(serviceId, envvar.GetTestProjectFromEnv(), parent, "2"),
+				Check:  testAccCheckEndpointExistsByName(t, serviceId),
+			},
+		},
+	})
+}
+
+func TestAccEndpointsService_openapiNotPreComputeConfigId(t *testing.T) {
+	t.Parallel()
+	prj := envvar.GetTestProjectFromEnv()
+	parent := fmt.Sprintf("projects/%s", prj)
+	serviceId := "tf-test" + acctest.RandString(t, 10)
+
+	acctest.VcrTest(t, resource.TestCase{
+		PreCheck:                 func() { acctest.AccTestPreCheck(t) },
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories(t),
+		CheckDestroy:             testAccCheckEndpointServiceDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccEndpointsService_openapiNotPreComputeConfigId(serviceId, envvar.GetTestProjectFromEnv(), parent, "1"),
+				Check:  testAccCheckEndpointExistsByName(t, serviceId),
+			},
+			{
+				Config: testAccEndpointsService_openapiNotPreComputeConfigId(serviceId, envvar.GetTestProjectFromEnv(), parent, "2"),
+				Check:  testAccCheckEndpointExistsByName(t, serviceId),
+			},
+		},
+	})
+}
+
 func testAccEndpointsService_basic(serviceId, project, rev string) string {
 	return fmt.Sprintf(`
 resource "google_endpoints_service" "endpoints_service" {
@@ -131,6 +177,106 @@ EOF
 `, serviceId, project)
 }
 
+func testAccEndpointsService_grpcNotPreComputeConfigIdByGrpcConfig(serviceId, project, parent, description string) string {
+	return fmt.Sprintf(`
+resource "google_tags_tag_key" "key1" {
+  parent      = "%[3]s"
+  short_name  = "endpoints-%[1]s-1"
+  description = "%[4]s"
+}
+
+resource "google_tags_tag_key" "key2" {
+  parent      = "%[3]s"
+  short_name  = "endpoints-%[1]s-2"
+  lifecycle {
+    replace_triggered_by = [google_tags_tag_key.key1.description]
+  }
+}
+
+resource "google_endpoints_service" "endpoints_service" {
+  service_name = "%[1]s.endpoints.%[2]s.cloud.goog"
+  project      = "%[2]s"
+  grpc_config  = <<EOF
+type: google.api.Service
+config_version: 3
+name: %[1]s.endpoints.%[2]s.cloud.goog
+title: Test ${google_tags_tag_key.key2.namespaced_name}
+usage:
+  rules:
+  - selector: endpoints.examples.bookstore.Bookstore.ListShelves
+    allow_unregistered_calls: true
+EOF
+
+  protoc_output_base64 = filebase64("test-fixtures/test_api_descriptor.pb")
+}
+`, serviceId, project, parent, description)
+}
+
+func testAccEndpointsService_openapiNotPreComputeConfigId(serviceId, project, parent, description string) string {
+	return fmt.Sprintf(`
+resource "google_tags_tag_key" "key1" {
+  parent      = "%[3]s"
+  short_name  = "endpoints-%[1]s-1"
+  description = "%[4]s"
+}
+
+resource "google_tags_tag_key" "key2" {
+  parent      = "%[3]s"
+  short_name  = "endpoints-%[1]s-2"
+  lifecycle {
+    replace_triggered_by = [google_tags_tag_key.key1.description]
+  }
+}
+resource "google_endpoints_service" "endpoints_service" {
+  service_name   = "%[1]s.endpoints.%[2]s.cloud.goog"
+  project        = "%[2]s"
+  openapi_config = <<EOF
+swagger: "2.0"
+info:
+  description: "${google_tags_tag_key.key2.namespaced_name}"
+  title: "Endpoints Example, rev. 1"
+  version: "1.0.0"
+host: "%[1]s.endpoints.%[2]s.cloud.goog"
+basePath: "/"
+consumes:
+- "application/json"
+produces:
+- "application/json"
+schemes:
+- "https"
+paths:
+  "/echo":
+    post:
+      description: "Echo back a given message."
+      operationId: "echo"
+      produces:
+      - "application/json"
+      responses:
+        200:
+          description: "Echo"
+          schema:
+            $ref: "#/definitions/echoMessage"
+      parameters:
+      - description: "Message to echo"
+        in: body
+        name: message
+        required: true
+        schema:
+          $ref: "#/definitions/echoMessage"
+      security:
+      - api_key: []
+definitions:
+  echoMessage:
+    properties:
+      message:
+        type: "string"
+EOF
+
+}
+
+`, serviceId, project, parent, description)
+}
+
 func testAccCheckEndpointExistsByName(t *testing.T, serviceId string) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		config := acctest.GoogleProviderConfig(t)