diff --git a/dist/Customer/Document.js b/dist/Customer/Document.js
index ffd8ee2..d3e1ac6 100644
--- a/dist/Customer/Document.js
+++ b/dist/Customer/Document.js
@@ -30,6 +30,7 @@ class Document extends Resource_1.default {
 }
 __decorate([
     (0, class_transformer_1.Expose)(),
+    (0, class_validator_1.IsNotEmpty)({ groups: ["createFile"], message: "UID is required" }),
     __metadata("design:type", String)
 ], Document.prototype, "uid", void 0);
 __decorate([
diff --git a/src/Customer/Document.ts b/src/Customer/Document.ts
index 4b2c0a1..c286613 100644
--- a/src/Customer/Document.ts
+++ b/src/Customer/Document.ts
@@ -1,5 +1,5 @@
 import {
-  IsDate,
+  IsDate, IsNotEmpty,
 } from "class-validator";
 import Customer from ".";
 import DocumentHistory from "./DocumentHistory";
@@ -11,6 +11,7 @@ import { Expose, Type } from "class-transformer";
 
 export default class Document extends Resource {
   @Expose()
+  @IsNotEmpty({ groups: ["createFile"], message: "UID is required" })
   public uid?: string;
 
   @Expose()