diff --git a/src/core/server/saved_objects/routes/copy.ts b/src/core/server/saved_objects/routes/copy.ts
index 7bace54db583..95e79ffd40a1 100644
--- a/src/core/server/saved_objects/routes/copy.ts
+++ b/src/core/server/saved_objects/routes/copy.ts
@@ -1,19 +1,12 @@
 /*
+ * Copyright OpenSearch Contributors
  * SPDX-License-Identifier: Apache-2.0
- *
- * The OpenSearch Contributors require contributions made to
- * this file be licensed under the Apache-2.0 license or a
- * compatible open source license.
- *
- * Any modifications Copyright OpenSearch Contributors. See
- * GitHub history for details.
  */
 
 import { schema } from '@osd/config-schema';
 import { IRouter } from '../../http';
 import { SavedObjectConfig } from '../saved_objects_config';
 import { exportSavedObjectsToStream } from '../export';
-import { validateObjects } from './utils';
 import { importSavedObjectsFromStream } from '../import';
 
 export const registerCopyRoute = (router: IRouter, config: SavedObjectConfig) => {
@@ -24,14 +17,11 @@ export const registerCopyRoute = (router: IRouter, config: SavedObjectConfig) =>
       path: '/_copy',
       validate: {
         body: schema.object({
-          objects: schema.maybe(
-            schema.arrayOf(
-              schema.object({
-                type: schema.string(),
-                id: schema.string(),
-              }),
-              { maxSize: maxImportExportSize }
-            )
+          objects: schema.arrayOf(
+            schema.object({
+              type: schema.string(),
+              id: schema.string(),
+            })
           ),
           includeReferencesDeep: schema.boolean({ defaultValue: false }),
           targetWorkspace: schema.string(),
@@ -47,15 +37,15 @@ export const registerCopyRoute = (router: IRouter, config: SavedObjectConfig) =>
         .getImportableAndExportableTypes()
         .map((t) => t.name);
 
-      if (objects) {
-        const validationError = validateObjects(objects, supportedTypes);
-        if (validationError) {
-          return res.badRequest({
-            body: {
-              message: validationError,
-            },
-          });
-        }
+      const invalidObjects = objects.filter((obj) => !supportedTypes.includes(obj.type));
+      if (invalidObjects.length) {
+        return res.badRequest({
+          body: {
+            message: `Trying to copy object(s) with unsupported types: ${invalidObjects
+              .map((obj) => `${obj.type}:${obj.id}`)
+              .join(', ')}`,
+          },
+        });
       }
 
       const objectsListStream = await exportSavedObjectsToStream({
diff --git a/src/core/server/saved_objects/routes/integration_tests/copy.test.ts b/src/core/server/saved_objects/routes/integration_tests/copy.test.ts
index 5ec1caf5a3f6..e8a9d83b30ea 100644
--- a/src/core/server/saved_objects/routes/integration_tests/copy.test.ts
+++ b/src/core/server/saved_objects/routes/integration_tests/copy.test.ts
@@ -114,7 +114,7 @@ describe(`POST ${URL}`, () => {
     const result = await supertest(httpSetup.server.listener).post(URL).send({}).expect(400);
 
     expect(result.body.message).toMatchInlineSnapshot(
-      `"[request body.targetWorkspace]: expected value of type [string] but got [undefined]"`
+      `"[request body.objects]: expected value of type [array] but got [undefined]"`
     );
   });
 
@@ -157,7 +157,7 @@ describe(`POST ${URL}`, () => {
       .expect(400);
 
     expect(result.body.message).toMatchInlineSnapshot(
-      `"Trying to export object(s) with non-exportable types: unknown:my-pattern"`
+      `"Trying to copy object(s) with unsupported types: unknown:my-pattern"`
     );
   });