diff --git a/exthernal-ttc-api/src/controllers/budgetExpenseController.js b/exthernal-ttc-api/src/controllers/budgetExpenseController.js
new file mode 100644
index 0000000..9580876
--- /dev/null
+++ b/exthernal-ttc-api/src/controllers/budgetExpenseController.js
@@ -0,0 +1,70 @@
+import { BudgetExpenseService } from '../services/budgetExpenseService.js'
+import { ProjectSearchService } from '../services/projectSearchService.js'
+import { sendError } from '../utils/response.js'
+// import { OftenError } from '../utils/oftenError.js'
+import { GeneralService } from '../share/generalservice.js';
+import { trim_all_array } from '../utils/trim.js'
+import { verifyToken, generateToken } from '../utils/token.js'
+import { Interface } from '../interfaces/Interface.js';
+
+
+export class budgetExpense {
+
+    constructor() {
+        this.generalService = new GeneralService();
+        this.Interface = new Interface();
+        this.budgetExpenseService = new BudgetExpenseService();
+        this.projectSearchService = new ProjectSearchService();
+    }
+
+    async onNavigate(req, res) {
+        this.generalService.devhint(1, 'budgetExpense.js', 'onNavigate() start');
+        let organization = req.body.organization;
+        const prommis = await this.onBudgetExpense(req, res, organization);
+        return prommis;
+    }
+
+    // TODO:
+    async onBudgetExpense(req, res, database) {
+        let idx = -1
+        let aryResult = []
+        let condition = {}
+        try {
+            let token = req.headers.authorization?.split(' ')[1];
+            const decoded = verifyToken(token);
+            database = decoded.organization
+            var column = ""
+
+            column = `prjseq`
+            condition['prjseq'] = req.body.request.prjseq;
+
+            // Check if Project is valid
+            aryResult = await this.projectSearchService.getProjectSearch(database, column, condition)
+        } catch (error) {
+            idx = 1;
+        } finally {
+            if (idx === 1) return sendError('เกิดข้อผิดพลาดไม่คาดคิดเกิดขึ้น', 'Unexpected error');
+            if (!aryResult) return sendError('ไม่พบการมีอยู่ของข้อมูล', 'Cannot Find Any Data');
+
+            if (aryResult.length == 1) {
+                // TODO: 
+
+                let prommis = await this.makeArySave(req);
+                return prommis
+            } else {
+                return sendError('ไม่พบการมีอยู่ของข้อมูลโครงการ', 'Cannot Find Project Data');
+            }
+        }
+    }
+
+    async makeArySave(req) {
+        let arysave = {
+            methods: 'post',
+            bdgseq: req.body.request.bdgseq,
+            bdgnam: req.body.request.bdgnam,
+            bdgcod: req.body.request.bdgcod,
+            bdgttl: req.body.request.bdgttl
+        }
+        return this.Interface.saveInterface('bdgmst', arysave, req);
+    }
+}
\ No newline at end of file
diff --git a/exthernal-ttc-api/src/interfaces/table/trnmstInterface.js b/exthernal-ttc-api/src/interfaces/table/trnmstInterface.js
index 551f9c5..a8f31a3 100644
--- a/exthernal-ttc-api/src/interfaces/table/trnmstInterface.js
+++ b/exthernal-ttc-api/src/interfaces/table/trnmstInterface.js
@@ -5,7 +5,7 @@ export class TrnmstInterface {
   constructor() {
     this.general = new GeneralService()
     this.table = 'trnmst'
-    this.pk = ['trnseq', 'trnprjnam']   // ⭐ PK จาก table
+    this.pk = ['trnseq', 'trnprjnam', 'trnbdgcod']   // ⭐ PK จาก table
   }
 
   async saveInterface(database, data) {
diff --git a/exthernal-ttc-api/src/routes/route.js b/exthernal-ttc-api/src/routes/route.js
index 9b7ad87..b26c5a9 100644
--- a/exthernal-ttc-api/src/routes/route.js
+++ b/exthernal-ttc-api/src/routes/route.js
@@ -3,6 +3,7 @@ import express from 'express'
 import { budgetSearch } from '../controllers/budgetSearchController.js'
 import { budgetAdd } from '../controllers/budgetAddController.js'
 import { projectSearch } from '../controllers/projectSearchController.js'
+import { budgetExpense } from '../controllers/budgetExpenseController.js'
 
 // import { authMiddleware } from '../middlewares/auth.js'
 // import { sendResponse } from '../utils/response.js'
@@ -11,6 +12,7 @@ const router = express.Router()
 const controller_projectSearch_post = new projectSearch()
 const controller_budgetSearch_post = new budgetSearch()
 const controller_budgetAdd_post = new budgetAdd()
+const controller_budgetSetup_post = new budgetExpense()
 
 // router.post('/budgetSetup', async (req, res) => {
 //   const result = await controller_budgetSetup_post.onNavigate(req, res)
@@ -32,10 +34,10 @@ router.post('/projectsearch', async (req, res) => {
   if (result) return res.json(result)
 })
 
-// router.put('/budgetexpense', async (req, res) => {
-//   const result = await controller_budgetSetup_post.onNavigate(req, res)
-//   if (result) return res.json(result)
-// })
+router.post('/budgetexpense', async (req, res) => {
+  const result = await controller_budgetSetup_post.onNavigate(req, res)
+  if (result) return res.json(result)
+})
 
 
 export default router
diff --git a/exthernal-ttc-api/src/services/budgetExpenseService.js b/exthernal-ttc-api/src/services/budgetExpenseService.js
new file mode 100644
index 0000000..c856096
--- /dev/null
+++ b/exthernal-ttc-api/src/services/budgetExpenseService.js
@@ -0,0 +1,21 @@
+import { GeneralService } from '../share/generalservice.js'
+
+export class BudgetExpenseService {
+
+  constructor() {
+    this.generalService = new GeneralService()
+  }
+
+  async getBudgetExpense(database, name) {
+    const sql = `
+      SELECT 
+        trnseq,
+        trnprjnam
+      FROM ${database}.trnmst
+      WHERE trnprjnam = $1
+    `
+    const params = [name]
+    const result = await this.generalService.executeQueryParam(database, sql, params);
+    return result
+  }
+}
\ No newline at end of file