diff --git a/sdk/core/core-client/CHANGELOG.md b/sdk/core/core-client/CHANGELOG.md
index 04014dbf90a8..b1406daa4f9a 100644
--- a/sdk/core/core-client/CHANGELOG.md
+++ b/sdk/core/core-client/CHANGELOG.md
@@ -10,6 +10,8 @@
 
 ### Other Changes
 
+- Removed the constraints check during serialization. Please refer [#21839](https://github.com/Azure/azure-sdk-for-js/issues/21839) for further details.
+
 ## 1.6.0 (2022-05-05)
 
 ### Features Added
diff --git a/sdk/core/core-client/review/core-client.api.md b/sdk/core/core-client/review/core-client.api.md
index 50051d01c7bb..6fdc58dcc1c8 100644
--- a/sdk/core/core-client/review/core-client.api.md
+++ b/sdk/core/core-client/review/core-client.api.md
@@ -312,6 +312,7 @@ export interface Serializer {
         [key: string]: any;
     };
     serialize(mapper: Mapper, object: any, objectName?: string, options?: SerializerOptions): any;
+    // @deprecated
     validateConstraints(mapper: Mapper, value: any, objectName: string): void;
 }
 
diff --git a/sdk/core/core-client/src/interfaces.ts b/sdk/core/core-client/src/interfaces.ts
index eaef7967d867..8dbfa8f90079 100644
--- a/sdk/core/core-client/src/interfaces.ts
+++ b/sdk/core/core-client/src/interfaces.ts
@@ -378,6 +378,7 @@ export interface Serializer {
    * @param mapper - The definition of data models.
    * @param value - The value.
    * @param objectName - Name of the object. Used in the error messages.
+   * @deprecated Removing the constraints validation on client side.
    */
   validateConstraints(mapper: Mapper, value: any, objectName: string): void;
 
diff --git a/sdk/core/core-client/src/serializer.ts b/sdk/core/core-client/src/serializer.ts
index c900e1b17f78..86a098401200 100644
--- a/sdk/core/core-client/src/serializer.ts
+++ b/sdk/core/core-client/src/serializer.ts
@@ -25,6 +25,9 @@ class SerializerImpl implements Serializer {
     public readonly isXML: boolean = false
   ) {}
 
+  /**
+   * @deprecated Removing the constraints validation on client side.
+   */
   validateConstraints(mapper: Mapper, value: any, objectName: string): void {
     const failValidation = (
       constraintName: keyof MapperConstraints,
@@ -154,8 +157,6 @@ class SerializerImpl implements Serializer {
     if (object === undefined || object === null) {
       payload = object;
     } else {
-      // Validate Constraints if any
-      this.validateConstraints(mapper, object, objectName);
       if (mapperType.match(/^any$/i) !== null) {
         payload = object;
       } else if (mapperType.match(/^(Number|String|Boolean|Object|Stream|Uuid)$/i) !== null) {
diff --git a/sdk/core/core-http/CHANGELOG.md b/sdk/core/core-http/CHANGELOG.md
index 35caf2c97364..4802a232e510 100644
--- a/sdk/core/core-http/CHANGELOG.md
+++ b/sdk/core/core-http/CHANGELOG.md
@@ -10,6 +10,8 @@
 
 ### Other Changes
 
+- Removed the constraints check during serialization. Please refer [#21839](https://github.com/Azure/azure-sdk-for-js/issues/21839) for further details.
+
 ## 2.2.5 (2022-05-05)
 
 ### Bugs Fixed
diff --git a/sdk/core/core-http/review/core-http.api.md b/sdk/core/core-http/review/core-http.api.md
index 3c58a4b3c93f..838198395f80 100644
--- a/sdk/core/core-http/review/core-http.api.md
+++ b/sdk/core/core-http/review/core-http.api.md
@@ -700,6 +700,7 @@ export class Serializer {
         [key: string]: any;
     };
     serialize(mapper: Mapper, object: unknown, objectName?: string, options?: SerializerOptions): any;
+    // @deprecated
     validateConstraints(mapper: Mapper, value: unknown, objectName: string): void;
 }
 
diff --git a/sdk/core/core-http/src/serializer.ts b/sdk/core/core-http/src/serializer.ts
index 2e59b4a777ac..630b84016d29 100644
--- a/sdk/core/core-http/src/serializer.ts
+++ b/sdk/core/core-http/src/serializer.ts
@@ -30,6 +30,7 @@ export class Serializer {
    * @param mapper - The definition of data models.
    * @param value - The value.
    * @param objectName - Name of the object. Used in the error messages.
+   * @deprecated Removing the constraints validation on client side.
    */
   validateConstraints(mapper: Mapper, value: unknown, objectName: string): void {
     const failValidation = (
@@ -156,8 +157,6 @@ export class Serializer {
     if (object == undefined) {
       payload = object;
     } else {
-      // Validate Constraints if any
-      this.validateConstraints(mapper, object, objectName);
       if (mapperType.match(/^any$/i) !== null) {
         payload = object;
       } else if (mapperType.match(/^(Number|String|Boolean|Object|Stream|Uuid)$/i) !== null) {
diff --git a/sdk/core/core-http/src/util/xml.ts b/sdk/core/core-http/src/util/xml.ts
index 9691ca1c3123..2e18dd61cb6d 100644
--- a/sdk/core/core-http/src/util/xml.ts
+++ b/sdk/core/core-http/src/util/xml.ts
@@ -85,7 +85,7 @@ export function parseXML(str: string, opts: SerializerOptions = {}): Promise<any
     if (!str) {
       reject(new Error("Document is empty"));
     } else {
-      xmlParser.parseString(str, (err, res) => {
+      xmlParser.parseString(str, (err: any, res: any) => {
         if (err) {
           reject(err);
         } else {