diff --git a/x-pack/plugins/infra/common/http_api/shared/errors.ts b/x-pack/plugins/infra/common/http_api/shared/errors.ts
index 5e439c31bbdc9..2b5461d71500e 100644
--- a/x-pack/plugins/infra/common/http_api/shared/errors.ts
+++ b/x-pack/plugins/infra/common/http_api/shared/errors.ts
@@ -7,18 +7,35 @@
 
 import * as rt from 'io-ts';
 
-const createErrorRuntimeType = <Attributes extends rt.Mixed = rt.UndefinedType>(
-  statusCode: number,
-  errorCode: string,
-  attributes?: Attributes
-) =>
+export const badRequestErrorRT = rt.intersection([
   rt.type({
-    statusCode: rt.literal(statusCode),
-    error: rt.literal(errorCode),
+    statusCode: rt.literal(400),
+    error: rt.literal('Bad Request'),
     message: rt.string,
-    ...(!!attributes ? { attributes } : {}),
-  });
+  }),
+  rt.partial({
+    attributes: rt.unknown,
+  }),
+]);
 
-export const badRequestErrorRT = createErrorRuntimeType(400, 'Bad Request');
-export const forbiddenErrorRT = createErrorRuntimeType(403, 'Forbidden');
-export const conflictErrorRT = createErrorRuntimeType(409, 'Conflict');
+export const forbiddenErrorRT = rt.intersection([
+  rt.type({
+    statusCode: rt.literal(403),
+    error: rt.literal('Forbidden'),
+    message: rt.string,
+  }),
+  rt.partial({
+    attributes: rt.unknown,
+  }),
+]);
+
+export const conflictErrorRT = rt.intersection([
+  rt.type({
+    statusCode: rt.literal(409),
+    error: rt.literal('Conflict'),
+    message: rt.string,
+  }),
+  rt.partial({
+    attributes: rt.unknown,
+  }),
+]);