diff --git a/src/controllers/project.controller.js b/src/controllers/project.controller.js
index b3cfc17e..38191140 100644
--- a/src/controllers/project.controller.js
+++ b/src/controllers/project.controller.js
@@ -149,7 +149,7 @@ export const update = async (req, res) => {
       data: JSON.stringify(Array.isArray(req.body) ? req.body : [req.body]),
     };
 
-    await Staging.create(stagedData);
+    await Staging.upsert(stagedData);
 
     res.json({
       message: 'Project update added to staging',
diff --git a/src/controllers/units.controller.js b/src/controllers/units.controller.js
index 6170ca04..6b87dcb7 100644
--- a/src/controllers/units.controller.js
+++ b/src/controllers/units.controller.js
@@ -109,7 +109,7 @@ export const update = async (req, res) => {
       data: JSON.stringify(Array.isArray(req.body) ? req.body : [req.body]),
     };
 
-    await Staging.create(stagedData);
+    await Staging.upsert(stagedData);
 
     res.json({
       message: 'Unit updated successfully',
diff --git a/src/controllers/units.controller.js.rej b/src/controllers/units.controller.js.rej
new file mode 100644
index 00000000..c3cb17ae
--- /dev/null
+++ b/src/controllers/units.controller.js.rej
@@ -0,0 +1,72 @@
+diff a/src/controllers/units.controller.js b/src/controllers/units.controller.js	(rejected hunks)
+@@ -2,7 +2,7 @@
+ 
+ import { uuid as uuidv4 } from 'uuidv4';
+ import { Staging, UnitMock, Unit, Qualification, Vintage } from '../models';
+-import { optionallyPaginatedResponse, paginationParams } from "./helpers";
++import { optionallyPaginatedResponse, paginationParams } from './helpers';
+ 
+ export const create = async (req, res) => {
+   try {
+@@ -37,30 +37,40 @@ export const findAll = async (req, res) => {
+   }
+ 
+   if (req.query.onlyEssentialColumns) {
+-    return res.json(optionallyPaginatedResponse(await Unit.findAndCountAll({
+-      attributes: [
+-        'orgUid',
+-        'unitLink',
+-        'registry',
+-        'unitType',
+-        'unitCount',
+-        'unitStatus',
+-        'unitStatusDate',
+-      ],
+-    }), page, limit));
++    return res.json(
++      optionallyPaginatedResponse(
++        await Unit.findAndCountAll({
++          attributes: [
++            'orgUid',
++            'unitLink',
++            'registry',
++            'unitType',
++            'unitCount',
++            'unitStatus',
++            'unitStatusDate',
++          ],
++        }),
++        page,
++        limit,
++      ),
++    );
+   }
+ 
+   res.json(
+-    optionallyPaginatedResponse(await Unit.findAndCountAll({
+-      include: [
+-        {
+-          model: Qualification,
+-          as: 'qualification',
+-        },
+-        Vintage,
+-      ],
+-      ...paginationParams(page, limit),
+-    }), page, limit),
++    optionallyPaginatedResponse(
++      await Unit.findAndCountAll({
++        include: [
++          {
++            model: Qualification,
++            as: 'qualification',
++          },
++          Vintage,
++        ],
++        ...paginationParams(page, limit),
++      }),
++      page,
++      limit,
++    ),
+   );
+ };
+ 
diff --git a/src/models/staging/staging.modeltypes.cjs b/src/models/staging/staging.modeltypes.cjs
index 649bc18c..b454fe13 100644
--- a/src/models/staging/staging.modeltypes.cjs
+++ b/src/models/staging/staging.modeltypes.cjs
@@ -6,7 +6,10 @@ module.exports = {
     primaryKey: true,
     autoIncrement: true,
   },
-  uuid: Sequelize.STRING,
+  uuid: {
+    type: Sequelize.STRING,
+    unique: true,
+  },
   table: Sequelize.STRING,
   action: Sequelize.STRING,
   data: Sequelize.STRING,