diff --git a/drinkWaterUnitAPI.js b/drinkWaterUnitAPI.js
index c372ad8..bf083db 100644
--- a/drinkWaterUnitAPI.js
+++ b/drinkWaterUnitAPI.js
@@ -37,7 +37,10 @@ export default class drinkWaterUnit extends BaseApi {
 
     const result = await db.drinkWaterUnit.findAll({
       where,
-      order: [["rate", "ASC"]],
+      order: [
+        ["rate", "ASC"],
+        ["universityName", "ASC"],
+      ],
     });
 
     return result;
@@ -69,21 +72,21 @@ export default class drinkWaterUnit extends BaseApi {
   add = async (data) => {
     const checkedData = _.pick(omitNull(data), db.drinkWaterUnit.add);
 
-    const city = await db.city.findByPk(checkedData.cityId);
-    if (!city)
+    checkedData.rate = checkedData.rate.upperCase();
+
+    if (!["A", "B", "C", "D"].includes(checkedData.rate))
       return {
-        statusCode: 404,
-        message: "شناسه شهر نامعتبر است",
+        statusCode: 400,
+        message: "بروز خطا در اطلاعات ورودی",
       };
 
-    const university = await db.university.findByPk(checkedData.universityId);
-    if (!university)
+    const result = await db.drinkWaterUnit.create(checkedData);
+    if (!result)
       return {
-        statusCode: 404,
-        message: "شناسه دانشگاه نامعتبر است",
+        statusCode: 400,
+        message: "درخواست انجام نشد.",
       };
 
-    const result = await db.drinkWaterUnit.create(checkedData);
     return { id: result.dataValues.id };
   };
 
@@ -104,6 +107,15 @@ export default class drinkWaterUnit extends BaseApi {
         message: "بروز خطا در اطلاعات ورودی",
       };
 
+    if (checkedData.rate) {
+      checkedData.rate = checkedData.rate.upperCase();
+      if (!["A", "B", "C", "D"].includes(checkedData.rate))
+        return {
+          statusCode: 400,
+          message: "درخواست انجام نشد.",
+        };
+    }
+
     const { id } = data;
 
     const result = await db.drinkWaterUnit.update(checkedData, {
diff --git a/drinkWaterUnitModel.js b/drinkWaterUnitModel.js
index ace2ab8..992a362 100644
--- a/drinkWaterUnitModel.js
+++ b/drinkWaterUnitModel.js
@@ -29,11 +29,6 @@ export default class drinkWaterUnit extends BaseModel {
       allowNull: false,
       desc: "نام دانشگاه",
     },
-    workflowId: {
-      type: this.DataTypes.INTEGER,
-      allowNull: true,
-      desc: "شناسه روند کار",
-    },
   };
 
   add = Object.keys(_.omit(this.schema, ["id"]));