diff --git a/x-pack/plugins/actions/server/actions_client.test.ts b/x-pack/plugins/actions/server/actions_client.test.ts
index d553a6080dfd31..a18a8adada424d 100644
--- a/x-pack/plugins/actions/server/actions_client.test.ts
+++ b/x-pack/plugins/actions/server/actions_client.test.ts
@@ -2675,7 +2675,7 @@ describe('update()', () => {
         },
       })
     ).rejects.toThrowErrorMatchingInlineSnapshot(
-      `"Preconfigured action testPreconfigured is not allowed to update."`
+      `"Preconfigured action testPreconfigured can not be updated."`
     );
   });
 
diff --git a/x-pack/plugins/actions/server/actions_client.ts b/x-pack/plugins/actions/server/actions_client.ts
index 9a4349601216a2..db25e302a4ac02 100644
--- a/x-pack/plugins/actions/server/actions_client.ts
+++ b/x-pack/plugins/actions/server/actions_client.ts
@@ -306,7 +306,7 @@ export class ActionsClient {
       if (foundInMemoryConnector?.isPreconfigured) {
         throw new PreconfiguredActionDisabledModificationError(
           i18n.translate('xpack.actions.serverSideErrors.predefinedActionUpdateDisabled', {
-            defaultMessage: 'Preconfigured action {id} is not allowed to update.',
+            defaultMessage: 'Preconfigured action {id} can not be updated.',
             values: {
               id,
             },
diff --git a/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/create.ts b/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/create.ts
index 6be435b569a977..017fd3e45999bd 100644
--- a/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/create.ts
+++ b/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/create.ts
@@ -350,7 +350,8 @@ export default function createActionTests({ getService }: FtrProviderContext) {
               expect(response.body).to.eql({
                 statusCode: 400,
                 error: 'Bad Request',
-                message: 'This custom-system-abc-connector already exist in preconfigured action.',
+                message:
+                  'This custom-system-abc-connector already exists in a preconfigured action.',
               });
               break;
             default:
diff --git a/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/update.ts b/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/update.ts
index c27208860fcfa8..7c3c00534f11d5 100644
--- a/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/update.ts
+++ b/x-pack/test/alerting_api_integration/security_and_spaces/group2/tests/actions/update.ts
@@ -345,7 +345,7 @@ export default function updateActionTests({ getService }: FtrProviderContext) {
               expect(response.body).to.eql({
                 statusCode: 400,
                 error: 'Bad Request',
-                message: `Preconfigured action custom-system-abc-connector is not allowed to update.`,
+                message: `Preconfigured action custom-system-abc-connector can not be updated.`,
               });
               break;
             default:
@@ -423,8 +423,7 @@ export default function updateActionTests({ getService }: FtrProviderContext) {
               expect(response.body).to.eql({
                 statusCode: 400,
                 error: 'Bad Request',
-                message:
-                  'System action system-connector-test.system-action is not allowed to update.',
+                message: 'System action system-connector-test.system-action can not be updated.',
               });
               break;
             default:
diff --git a/x-pack/test/alerting_api_integration/spaces_only/tests/actions/create.ts b/x-pack/test/alerting_api_integration/spaces_only/tests/actions/create.ts
index 614c130cc7120f..6941aa6f180255 100644
--- a/x-pack/test/alerting_api_integration/spaces_only/tests/actions/create.ts
+++ b/x-pack/test/alerting_api_integration/spaces_only/tests/actions/create.ts
@@ -93,7 +93,7 @@ export default function createActionTests({ getService }: FtrProviderContext) {
         .expect(400, {
           statusCode: 400,
           error: 'Bad Request',
-          message: 'This custom-system-abc-connector already exist in preconfigured action.',
+          message: 'This custom-system-abc-connector already exists in a preconfigured action.',
         });
     });
 
diff --git a/x-pack/test/alerting_api_integration/spaces_only/tests/actions/update.ts b/x-pack/test/alerting_api_integration/spaces_only/tests/actions/update.ts
index 5dd515395994c4..d64ccc15c49994 100644
--- a/x-pack/test/alerting_api_integration/spaces_only/tests/actions/update.ts
+++ b/x-pack/test/alerting_api_integration/spaces_only/tests/actions/update.ts
@@ -122,7 +122,7 @@ export default function updateActionTests({ getService }: FtrProviderContext) {
         .expect(400, {
           statusCode: 400,
           error: 'Bad Request',
-          message: `Preconfigured action custom-system-abc-connector is not allowed to update.`,
+          message: `Preconfigured action custom-system-abc-connector can not be updated.`,
         });
     });
 
@@ -146,7 +146,7 @@ export default function updateActionTests({ getService }: FtrProviderContext) {
         .expect(400, {
           statusCode: 400,
           error: 'Bad Request',
-          message: 'System action system-connector-test.system-action is not allowed to update.',
+          message: 'System action system-connector-test.system-action can not be updated.',
         });
     });
 
@@ -310,7 +310,7 @@ export default function updateActionTests({ getService }: FtrProviderContext) {
           .expect(400, {
             statusCode: 400,
             error: 'Bad Request',
-            message: `Preconfigured action custom-system-abc-connector is not allowed to update.`,
+            message: `Preconfigured action custom-system-abc-connector can not be updated.`,
           });
       });
 
@@ -334,7 +334,7 @@ export default function updateActionTests({ getService }: FtrProviderContext) {
           .expect(400, {
             statusCode: 400,
             error: 'Bad Request',
-            message: 'System action system-connector-test.system-action is not allowed to update.',
+            message: 'System action system-connector-test.system-action can not be updated.',
           });
       });