diff --git a/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.test.ts b/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.test.ts
index a929cc9d29d0a3..94af72c5e29025 100644
--- a/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.test.ts
+++ b/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.test.ts
@@ -33,6 +33,9 @@ describe('Mappings configuration validator', () => {
         required: false,
       },
       dynamic: true,
+      _data_stream_timestamp: {
+        enabled: true,
+      },
       // Mapper-size plugin
       _size: {
         enabled: true,
diff --git a/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.ts b/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.ts
index 3691367e4a8f20..31f671aeaaf9cf 100644
--- a/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.ts
+++ b/x-pack/plugins/index_management/public/application/components/mappings_editor/lib/mappings_validator.ts
@@ -206,6 +206,9 @@ export const validateProperties = (properties: unknown = {}): PropertiesValidato
 export const mappingsConfigurationSchema = t.exact(
   t.partial({
     properties: t.UnknownRecord,
+    _data_stream_timestamp: t.interface({
+      enabled: t.boolean,
+    }),
     runtime: t.UnknownRecord,
     dynamic: t.union([
       t.literal(true),