Product create and update validation added

app/models/product.model.js

@@ -14,10 +14,20 @@ module.exports = (sequelize, DataTypes) => {
         type: DataTypes.INTEGER,
         allowNull: true,
         unique: true,
+        validate: {
+        len: {
+          args: [0, 10],
+          msg: "Invalid HS Code: maximum length is 10 digits."
+        }}
       },
       hs_description: {
         type: DataTypes.TEXT,
         allowNull: true,
+        validate: {
+        len: {
+          args: [0, 1000],
+          msg: "HS Description is too long. Maximum allowed length is 1000 characters."
+        }}
       },
       unit_id: {
         type: DataTypes.INTEGER,