diff --git a/controllers/brand.controller.js b/controllers/brand.controller.js
index 9e1f73e..4820f71 100644
--- a/controllers/brand.controller.js
+++ b/controllers/brand.controller.js
@@ -4,7 +4,6 @@ const { createFileUploadDb } = require('../db/file_uploads.db');
 const {
   insertBrandSchema,
   updateBrandSchema,
-  uploadSolutionSchema
 } = require('../validate/brand.schema');
 
 class BrandController {
@@ -23,6 +22,9 @@ class BrandController {
     const { id } = req.params;
 
     const results = await BrandService.getBrandById(id);
+
+    // console.log('Brand response structure:', JSON.stringify(results, null, 2));
+
     const response = await setResponse(results, 'Brand found');
 
     res.status(response.statusCode).json(response);
@@ -98,14 +100,8 @@ class BrandController {
   // Soft delete brand by ID
   static async delete(req, res) {
     const { id } = req.params;
-    // Get brand by ID first to get name for deletion
-    const brand = await BrandService.getBrandById(id);
-    if (!brand) {
-      const response = await setResponse([], 'Brand not found', 404);
-      return res.status(response.statusCode).json(response);
-    }
 
-    const results = await BrandService.deleteBrand(brand.brand_name, req.user.user_id);
+    const results = await BrandService.deleteBrand(id, req.user.user_id);
     const response = await setResponse(results, 'Brand deleted successfully');
 
     res.status(response.statusCode).json(response);
diff --git a/db/brand.db.js b/db/brand.db.js
index 0d985b4..e305bad 100644
--- a/db/brand.db.js
+++ b/db/brand.db.js
@@ -102,14 +102,14 @@ const updateBrandDb = async (brandName, data) => {
   return getBrandByNameDb(brandName);
 };
 
-// Soft delete brand by name
-const deleteBrandDb = async (brandName, deletedBy) => {
+// Soft delete brand 
+const deleteBrandDb = async (id, deletedBy) => {
   const queryText = `
     UPDATE m_brands
     SET deleted_at = CURRENT_TIMESTAMP, deleted_by = $1
-    WHERE brand_name = $2 AND deleted_at IS NULL
+    WHERE brand_id = $2 AND deleted_at IS NULL
   `;
-  await pool.query(queryText, [deletedBy, brandName]);
+  await pool.query(queryText, [deletedBy, id]);
   return true;
 };
 
@@ -131,33 +131,6 @@ const checkBrandNameExistsDb = async (brandName, excludeId = null) => {
   return result.recordset.length > 0;
 };
 
-// Get brand with error codes count
-const getBrandsWithErrorCodeCountDb = async (searchParams = {}) => {
-  let queryParams = [];
-
-  const queryText = `
-    SELECT
-      a.brand_id,
-      a.brand_name,
-      a.brand_type,
-      a.brand_manufacture,
-      a.brand_model,
-      a.brand_code,
-      a.is_active,
-      a.created_at,
-      COUNT(bc.error_code_id) as error_code_count
-    FROM m_brands a
-    LEFT JOIN brand_code bc ON a.brand_id = bc.brand_id AND bc.deleted_at IS NULL
-    WHERE a.deleted_at IS NULL
-    GROUP BY
-      a.brand_id, a.brand_name, a.brand_type, a.brand_manufacture,
-      a.brand_model, a.brand_code, a.is_active, a.created_at
-    ORDER BY a.brand_name
-  `;
-
-  const result = await pool.query(queryText, queryParams);
-  return result.recordset;
-};
 
 module.exports = {
   getAllBrandsDb,
@@ -167,5 +140,4 @@ module.exports = {
   updateBrandDb,
   deleteBrandDb,
   checkBrandNameExistsDb,
-  getBrandsWithErrorCodeCountDb,
 };
\ No newline at end of file
diff --git a/db/brand_code.db.js b/db/brand_code.db.js
index aac38b7..ec64d0c 100644
--- a/db/brand_code.db.js
+++ b/db/brand_code.db.js
@@ -13,17 +13,6 @@ const getErrorCodesByBrandIdDb = async (brandId) => {
   return result.recordset;
 };
 
-// Get error code by brand ID and error code
-const getErrorCodeByBrandIdAndCodeDb = async (brandId, errorCode) => {
-  const queryText = `
-    SELECT
-      a.*
-    FROM brand_code a
-    WHERE a.brand_id = $1 AND a.error_code = $2 AND a.deleted_at IS NULL
-  `;
-  const result = await pool.query(queryText, [brandId, errorCode]);
-  return result.recordset[0];
-};
 
 // Create error code for brand
 const createErrorCodeDb = async (brandId, data) => {
@@ -66,29 +55,10 @@ const deleteErrorCodeDb = async (brandId, errorCode, deletedBy) => {
   return true;
 };
 
-// Check if error code exists for brand
-const checkErrorCodeExistsDb = async (brandId, errorCode, excludeId = null) => {
-  let queryText = `
-    SELECT error_code_id
-    FROM brand_code
-    WHERE brand_id = $1 AND error_code = $2 AND deleted_at IS NULL
-  `;
-  let values = [brandId, errorCode];
-
-  if (excludeId) {
-    queryText += ` AND error_code_id != $3`;
-    values.push(excludeId);
-  }
-
-  const result = await pool.query(queryText, values);
-  return result.recordset.length > 0;
-};
 
 module.exports = {
   getErrorCodesByBrandIdDb,
-  getErrorCodeByBrandIdAndCodeDb,
   createErrorCodeDb,
   updateErrorCodeDb,
   deleteErrorCodeDb,
-  checkErrorCodeExistsDb,
 };
\ No newline at end of file
diff --git a/db/brand_code_solution.db.js b/db/brand_code_solution.db.js
index 92283bd..7c252bb 100644
--- a/db/brand_code_solution.db.js
+++ b/db/brand_code_solution.db.js
@@ -52,22 +52,9 @@ const deleteSolutionDb = async (solutionId, deletedBy) => {
   return true;
 };
 
-// Get solution by ID
-const getSolutionByIdDb = async (solutionId) => {
-  const queryText = `
-    SELECT
-      a.*
-    FROM brand_code_solution a
-    WHERE a.brand_code_solution_id = $1 AND a.deleted_at IS NULL
-  `;
-  const result = await pool.query(queryText, [solutionId]);
-  return result.recordset[0];
-};
-
 module.exports = {
   getSolutionsByErrorCodeIdDb,
   createSolutionDb,
   updateSolutionDb,
   deleteSolutionDb,
-  getSolutionByIdDb,
 };
\ No newline at end of file
diff --git a/services/brand.service.js b/services/brand.service.js
index 9bb2884..33be0d4 100644
--- a/services/brand.service.js
+++ b/services/brand.service.js
@@ -15,7 +15,6 @@ const {
   createErrorCodeDb,
   updateErrorCodeDb,
   deleteErrorCodeDb,
-  checkErrorCodeExistsDb,
 } = require('../db/brand_code.db');
 
 // Solution operations
@@ -58,15 +57,31 @@ class BrandService {
           const solutionsWithFiles = await Promise.all(
             solutions.map(async (solution) => {
               let fileData = null;
+              // console.log('Processing solution:', {
+              //   solution_id: solution.brand_code_solution_id,
+              //   path_solution: solution.path_solution,
+              //   type_solution: solution.type_solution
+              // });
+
               if (solution.path_solution && solution.type_solution !== 'text') {
                 fileData = await getFileUploadByPathDb(solution.path_solution);
+                console.log('File data found:', fileData);
               }
 
-              return {
+              const enhancedSolution = {
                 ...solution,
                 file_upload_name: fileData?.file_upload_name || null,
                 path_document: fileData?.path_document || null
               };
+
+              // console.log('Enhanced solution:', {
+              //   solution_id: enhancedSolution.brand_code_solution_id,
+              //   original_path_solution: enhancedSolution.path_solution,
+              //   path_document: enhancedSolution.path_document,
+              //   file_upload_name: enhancedSolution.file_upload_name
+              // });
+
+              return enhancedSolution;
             })
           );
 
@@ -125,7 +140,6 @@ class BrandService {
       const brandId = createdBrand.brand_id;
       
       for (const errorCodeData of data.error_code) {
-        // Use separate db function for error codes
         const errorId = await createErrorCodeDb(brandId, {
           error_code: errorCodeData.error_code,
           error_code_name: errorCodeData.error_code_name,
@@ -141,7 +155,6 @@ class BrandService {
         // Create solutions for this error code
         if (errorCodeData.solution && Array.isArray(errorCodeData.solution)) {
           for (const solutionData of errorCodeData.solution) {
-            // Use separate db function for solutions
             await createSolutionDb(errorId, {
               solution_name: solutionData.solution_name,
               type_solution: solutionData.type_solution,
@@ -161,17 +174,16 @@ class BrandService {
     }
   }
 
-  // Soft delete brand by name (convert to ID for database operation)
-  static async deleteBrand(brandName, userId) {
+  // Soft delete brand by ID
+  static async deleteBrand(id, userId) {
     try {
-      // Get brand by name first to get ID
-      const brandExist = await getBrandByNameDb(brandName);
+      const brandExist = await getBrandByIdDb(id);
 
       if (!brandExist) {
         throw new ErrorHandler(404, 'Brand not found');
       }
 
-      const result = await deleteBrandDb(brandName, userId);
+      const result = await deleteBrandDb(id, userId);
 
       return result;
     } catch (error) {
@@ -185,7 +197,6 @@ class BrandService {
         const existingBrand = await getBrandByIdDb(id);
         if (!existingBrand) throw new ErrorHandler(404, 'Brand not found');
 
-        // Check if brand name already exists (excluding current brand)
         if (data.brand_name && data.brand_name !== existingBrand.brand_name) {
           const brandExists = await checkBrandNameExistsDb(data.brand_name, id);
           if (brandExists) {
@@ -206,6 +217,7 @@ class BrandService {
 
         if (data.error_code && Array.isArray(data.error_code)) {
           const existingErrorCodes = await getErrorCodesByBrandIdDb(id);
+          const incomingErrorCodes = data.error_code.map(ec => ec.error_code);
 
           // Create/update/delete error codes
           for (const errorCodeData of data.error_code) {
@@ -222,15 +234,41 @@ class BrandService {
               });
 
               if (errorCodeData.solution && Array.isArray(errorCodeData.solution)) {
+                const existingSolutions = await getSolutionsByErrorCodeIdDb(existingEC.error_code_id);
+                const incomingSolutionNames = errorCodeData.solution.map(s => s.solution_name);
+
+                // Update or create solutions
                 for (const solutionData of errorCodeData.solution) {
-                  await createSolutionDb(existingEC.error_code_id, {
-                    solution_name: solutionData.solution_name,
-                    type_solution: solutionData.type_solution,
-                    text_solution: solutionData.text_solution || null,
-                    path_solution: solutionData.path_solution || null,
-                    is_active: solutionData.is_active,
-                    created_by: data.updated_by
-                  });
+                  const existingSolution = existingSolutions.find(s => s.solution_name === solutionData.solution_name);
+
+                  if (existingSolution) {
+                    // Update existing solution
+                    await updateSolutionDb(existingSolution.brand_code_solution_id, {
+                      solution_name: solutionData.solution_name,
+                      type_solution: solutionData.type_solution,
+                      text_solution: solutionData.text_solution || null,
+                      path_solution: solutionData.path_solution || null,
+                      is_active: solutionData.is_active,
+                      updated_by: data.updated_by
+                    });
+                  } else {
+                    // Create new solution
+                    await createSolutionDb(existingEC.error_code_id, {
+                      solution_name: solutionData.solution_name,
+                      type_solution: solutionData.type_solution,
+                      text_solution: solutionData.text_solution || null,
+                      path_solution: solutionData.path_solution || null,
+                      is_active: solutionData.is_active,
+                      created_by: data.updated_by
+                    });
+                  }
+                }
+
+                // Delete solutions that are not in the incoming request
+                for (const existingSolution of existingSolutions) {
+                  if (!incomingSolutionNames.includes(existingSolution.solution_name)) {
+                    await deleteSolutionDb(existingSolution.brand_code_solution_id, data.updated_by);
+                  }
                 }
               }
             } else {
@@ -256,6 +294,12 @@ class BrandService {
               }
             }
           }
+
+          for (const existingEC of existingErrorCodes) {
+            if (!incomingErrorCodes.includes(existingEC.error_code)) {
+              await deleteErrorCodeDb(id, existingEC.error_code, data.updated_by);
+            }
+          }
         }
 
       return await this.getBrandById(id);
diff --git a/validate/brand.schema.js b/validate/brand.schema.js
index ac6cf98..450972e 100644
--- a/validate/brand.schema.js
+++ b/validate/brand.schema.js
@@ -5,17 +5,18 @@ const Joi = require("joi");
 // ========================
 const insertBrandSchema = Joi.object({
     brand_name: Joi.string().max(100).required(),
-    brand_type: Joi.string().max(50).optional(),
-    brand_manufacture: Joi.string().max(100).optional(),
-    brand_model: Joi.string().max(100).optional(),
+    brand_type: Joi.string().max(50).optional().allow(''),
+    brand_manufacture: Joi.string().max(100).required(),
+    brand_model: Joi.string().max(100).optional().allow(''),
     is_active: Joi.boolean().required(),
-    description: Joi.string().max(255).optional(),
+    description: Joi.string().max(255).optional().allow(''),
     error_code: Joi.array().items(
         Joi.object({
             error_code: Joi.string().max(100).required(),
             error_code_name: Joi.string().max(100).required(),
-            error_code_description: Joi.string().optional(),
+            error_code_description: Joi.string().optional().allow(''),
             is_active: Joi.boolean().required(),
+            what_action_to_take: Joi.string().optional().allow(''),
             solution: Joi.array().items(
                 Joi.object({
                     solution_name: Joi.string().max(100).required(),
@@ -40,17 +41,18 @@ const insertBrandSchema = Joi.object({
 // Update Brand Validation
 const updateBrandSchema = Joi.object({
     brand_name: Joi.string().max(100).required(),
-    brand_type: Joi.string().max(50).optional(),
-    brand_manufacture: Joi.string().max(100).optional(),
-    brand_model: Joi.string().max(100).optional(),
+    brand_type: Joi.string().max(50).optional().allow(''),
+    brand_manufacture: Joi.string().max(100).required(),
+    brand_model: Joi.string().max(100).optional().allow(''),
     is_active: Joi.boolean().required(),
-    description: Joi.string().max(255).optional(),
+    description: Joi.string().max(255).optional().allow(''),
     error_code: Joi.array().items(
         Joi.object({
             error_code: Joi.string().max(100).required(),
             error_code_name: Joi.string().max(100).required(),
-            error_code_description: Joi.string().optional(),
+            error_code_description: Joi.string().optional().allow(''),
             is_active: Joi.boolean().required(),
+            what_action_to_take: Joi.string().optional().allow(''),
             solution: Joi.array().items(
                 Joi.object({
                     solution_name: Joi.string().max(100).required(),
@@ -69,7 +71,7 @@ const updateBrandSchema = Joi.object({
                 })
             ).min(1).required()
         })
-    ).optional() 
+    ).optional()
 }).min(1);
 
 module.exports = {