diff --git a/packages/app/test/src/__snapshots__/InputState.test.ts.snap b/packages/app/test/src/__snapshots__/InputState.test.ts.snap
index 984e21fe..0e24c64a 100644
--- a/packages/app/test/src/__snapshots__/InputState.test.ts.snap
+++ b/packages/app/test/src/__snapshots__/InputState.test.ts.snap
@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`Route Fails 1`] = `[Error: Assertion failed]`;
+exports[`Route Fails 1`] = `[Error: Assertion failed: payload]`;
 
 exports[`Route Success 1`] = `
 Object {
diff --git a/packages/input/src/Type/Fields.ts b/packages/input/src/Type/Fields.ts
index f1317f4a..11cb1e7b 100644
--- a/packages/input/src/Type/Fields.ts
+++ b/packages/input/src/Type/Fields.ts
@@ -36,6 +36,7 @@ export class Fields<TValue extends Record<string, any>> extends TypeAbstract<TVa
     public async validate(payload: unknown): Promise<TValue> {
         this.assert(isObject(payload), `Wrong payload: ${this.name} expected`, payload);
 
+        const errorFields: string[] = [];
         const entries: [string, any][] = [];
         const validations = new Map<string, IReadableTypeError>();
         for (const [field, type] of Object.entries(this.#fields)) {
@@ -49,6 +50,8 @@ export class Fields<TValue extends Record<string, any>> extends TypeAbstract<TVa
 
                 entries.push([field, await validationType.validate(payload[field])]);
             } catch (error) {
+                errorFields.push(field);
+
                 if (isInstanceOf(error, AssertionTypeError)) {
                     validations.set(field, error.toSafeJSON());
                     continue;
@@ -64,7 +67,7 @@ export class Fields<TValue extends Record<string, any>> extends TypeAbstract<TVa
 
         if (validations.size > 0) {
             throw new AssertionObjectError(
-                "Assertion failed",
+                `Assertion failed: ${errorFields.join(", ")}`,
                 this,
                 payload,
                 entriesReverse([...validations.entries()]),
diff --git a/packages/input/src/interfaces.ts b/packages/input/src/interfaces.ts
index eb5c6030..3eadda53 100644
--- a/packages/input/src/interfaces.ts
+++ b/packages/input/src/interfaces.ts
@@ -1,4 +1,4 @@
-import {Fields, List, Union} from "./Type";
+import {Fields, List, Union, RecordType} from "./Type";
 import {TypeAbstract} from "./TypeAbstract";
 
 export type FieldFn<T> = () => T;
@@ -10,7 +10,7 @@ export type FieldsSchema<T> = {
         : T[K] extends Date
             ? FieldType<TypeAbstract<T[K]>>
             : T[K] extends Record<any, any>
-                ? FieldType<Fields<T[K]> | Union<T[K]>>
+                ? FieldType<Fields<T[K]> | Union<T[K]> | typeof RecordType>
                 : FieldType<TypeAbstract<T[K]>>;
 };
 
diff --git a/packages/input/test/src/Main.test.ts b/packages/input/test/src/Main.test.ts
index ab3bc03c..1b747c91 100644
--- a/packages/input/test/src/Main.test.ts
+++ b/packages/input/test/src/Main.test.ts
@@ -133,10 +133,15 @@ describe("Test Input", () => {
     });
 
     test("RecordType", async () => {
-        const plainObject = {foo: 1, bar: 2};
-        await expect(validate(RecordType, plainObject))
+        const dataset = {id: Math.random(), data: {foo: 1, bar: 2}};
+        const schema = new Fields<{id: number; data: Record<string, any>}>({
+            id: Float,
+            data: RecordType,
+        });
+
+        await expect(validate(schema, dataset))
             .resolves
-            .toEqual(plainObject);
+            .toEqual(dataset);
 
         await expect(validate(RecordType, null))
             .rejects
diff --git a/packages/input/test/src/__snapshots__/Main.test.ts.snap b/packages/input/test/src/__snapshots__/Main.test.ts.snap
index 9777ed9e..df785e8f 100644
--- a/packages/input/test/src/__snapshots__/Main.test.ts.snap
+++ b/packages/input/test/src/__snapshots__/Main.test.ts.snap
@@ -19,7 +19,7 @@ Object {
             },
           },
           "index": 1,
-          "message": "Assertion failed",
+          "message": "Assertion failed: children, links",
           "payload": Object {
             "age": 12,
             "children": 1,
@@ -41,7 +41,7 @@ Object {
             },
           },
           "index": 2,
-          "message": "Assertion failed",
+          "message": "Assertion failed: name, links",
           "payload": Object {
             "age": 3,
           },
@@ -81,7 +81,7 @@ Object {
           "type": "Int",
         },
       },
-      "message": "Assertion failed",
+      "message": "Assertion failed: age",
       "payload": Object {
         "links": Array [
           "a",
@@ -91,7 +91,7 @@ Object {
       "type": "Human",
     },
   },
-  "message": "Assertion failed",
+  "message": "Assertion failed: name, children, parent",
   "payload": Object {
     "age": 32,
     "children": Array [