diff --git a/packages/datasource-customizer/src/context/relaxed-wrappers/collection.ts b/packages/datasource-customizer/src/context/relaxed-wrappers/collection.ts
index 70e1bef262..b3e5678181 100644
--- a/packages/datasource-customizer/src/context/relaxed-wrappers/collection.ts
+++ b/packages/datasource-customizer/src/context/relaxed-wrappers/collection.ts
@@ -11,6 +11,7 @@ import {
   PaginatedFilter,
   Projection,
   RecordData,
+  RecordValidator,
   Sort,
 } from '@forestadmin/datasource-toolkit';
 
@@ -132,6 +133,8 @@ export default class RelaxedCollection<
   update(filter: TFilter<S, N>, patch: TPartialSimpleRow<S, N>): Promise<void> {
     const filterInstance = this.buildFilter(filter);
 
+    RecordValidator.validate(this.collection, patch);
+
     return this.collection.update(this.caller, filterInstance, patch);
   }
 
diff --git a/packages/datasource-customizer/test/context/wrapper.test.ts b/packages/datasource-customizer/test/context/wrapper.test.ts
index 78d20b59e8..8da40ce318 100644
--- a/packages/datasource-customizer/test/context/wrapper.test.ts
+++ b/packages/datasource-customizer/test/context/wrapper.test.ts
@@ -38,7 +38,13 @@ describe('RelaxedWrappers', () => {
 
     beforeEach(() => {
       caller = factories.caller.build();
-      collection = factories.collection.build();
+      collection = factories.collection.build({
+        schema: {
+          fields: {
+            name: factories.columnSchema.build({ columnType: 'String' }),
+          },
+        },
+      });
       relaxed = new RelatedCollection(collection, caller);
     });
 
@@ -154,6 +160,14 @@ describe('RelaxedWrappers', () => {
       );
     });
 
+    test('should validate patch operation before forwarding update', async () => {
+      await expect(() =>
+        relaxed.update({ segment: 'some_segment' }, { nonexistingField: 'newValue' }),
+      ).toThrow('Unknown field "nonexistingField"');
+
+      expect(collection.update).not.toHaveBeenCalled();
+    });
+
     test('should forward delete and transform filter', async () => {
       await relaxed.delete({ segment: 'some_segment' });