diff --git a/back/methods/collection/exchangeRateUpdate.js b/back/methods/collection/exchangeRateUpdate.js
index 8525fa980..093ee6e48 100644
--- a/back/methods/collection/exchangeRateUpdate.js
+++ b/back/methods/collection/exchangeRateUpdate.js
@@ -28,33 +28,36 @@ module.exports = Self => {
         const models = Self.app.models;
 
         const maxDateRecord = await models.ReferenceRate.findOne({order: 'dated DESC'});
-        let maxDate = maxDateRecord ? new Date(maxDateRecord.dated) : null;
 
-        for (const cube of cubes) {
-            if (cube.attributes.getNamedItem('time')) {
+        const maxDate = maxDateRecord && maxDateRecord.dated ? new Date(maxDateRecord.dated) : null;
+
+        for (let i = 0; i < cubes.length; i++) {
+            const cube = cubes[i];
+            if (cube.nodeType === 1 && cube.attributes.getNamedItem('time')) {
                 const xmlDate = new Date(cube.getAttribute('time'));
-                if (!maxDate || maxDate < xmlDate) {
-                    for (const rateCube of cube.childNodes) {
-                        if (rateCube.nodeType === Node.ELEMENT_NODE) {
+                const xmlDateWithoutTime = new Date(xmlDate.getFullYear(), xmlDate.getMonth(), xmlDate.getDate());
+                if (!maxDate || maxDate < xmlDateWithoutTime) {
+                    for (let j = 0; j < cube.childNodes.length; j++) {
+                        const rateCube = cube.childNodes[j];
+                        if (rateCube.nodeType === doc.ELEMENT_NODE) {
                             const currencyCode = rateCube.getAttribute('currency');
                             const rate = rateCube.getAttribute('rate');
                             if (['USD', 'CNY', 'GBP'].includes(currencyCode)) {
                                 const currency = await models.Currency.findOne({where: {code: currencyCode}});
                                 if (!currency) throw new UserError(`Currency not found for code: ${currencyCode}`);
+                                const existingRate = await models.ReferenceRate.findOne({
+                                    where: {currencyFk: currency.id, dated: xmlDate}
+                                });
 
-                                try {
-                                    await models.ReferenceRate.upsertWithWhere(
-                                        {currencyFk: currency.id, dated: xmlDate},
-                                        {
-                                            currencyFk: currency.id,
-                                            dated: xmlDate,
-                                            value: rate
-                                        }
-                                    );
-                                } catch (error) {
-                                    console.error(`Failed to upsert rate for ${currencyCode} on ${xmlDate}: ${error}`);
-                                    // Handle or throw the error accordingly
-                                    throw error;
+                                if (existingRate) {
+                                    if (existingRate.value !== rate)
+                                        await existingRate.updateAttributes({value: rate});
+                                } else {
+                                    await models.ReferenceRate.create({
+                                        currencyFk: currency.id,
+                                        dated: xmlDate,
+                                        value: rate
+                                    });
                                 }
                             }
                         }
diff --git a/back/models/collection.json b/back/models/collection.json
index 3e428ef60..cb8dc3d7c 100644
--- a/back/models/collection.json
+++ b/back/models/collection.json
@@ -1,6 +1,11 @@
 {
     "name": "Collection",
     "base": "VnModel",
+    "options": {
+		"mysql": {
+			"table": "collection"
+		}
+	},
     "acls": [{
         "property": "validations",
         "accessType": "EXECUTE",
@@ -9,4 +14,3 @@
         "permission": "ALLOW"
 	}]
 }
-  
\ No newline at end of file
diff --git a/back/models/reference-rate.json b/back/models/reference-rate.json
index 3553df5c5..b77213b29 100644
--- a/back/models/reference-rate.json
+++ b/back/models/reference-rate.json
@@ -8,21 +8,18 @@
         }
     },
     "properties": {
+        "id": {
+            "type": "number",
+            "id": true,
+            "description": "Identifier"
+        },
         "currencyFk": {
             "type": "number",
-            "required": true,
-            "id": 1,
-            "mysql": {
-                "dataType": "tinyint",
-                "dataLength": 3,
-                "unsigned": true,
-                "primaryKey": true
-            }
+            "required": true
         },
         "dated": {
             "type": "date",
-            "required": true,
-            "id": 2
+            "required": true
         },
         "value": {
             "type": "number",
diff --git a/db/versions/10992-goldenIvy/00-acl.sql b/db/versions/10992-goldenIvy/00-acl.sql
new file mode 100644
index 000000000..551905be1
--- /dev/null
+++ b/db/versions/10992-goldenIvy/00-acl.sql
@@ -0,0 +1,2 @@
+INSERT INTO `salix`.`ACL` (`model`, `property`, `accessType`, `permission`, `principalType`, `principalId`)
+    VALUES ('Collection', 'exchangeRateUpdate', '*', 'ALLOW', 'ROLE', 'employee');
diff --git a/db/versions/10992-goldenIvy/00-referenceRate.sql b/db/versions/10992-goldenIvy/00-referenceRate.sql
new file mode 100644
index 000000000..db53f328f
--- /dev/null
+++ b/db/versions/10992-goldenIvy/00-referenceRate.sql
@@ -0,0 +1,4 @@
+ALTER TABLE vn.referenceRate DROP INDEX `PRIMARY`;
+ALTER TABLE vn.referenceRate ADD id INT auto_increment PRIMARY KEY;
+ALTER TABLE vn.referenceRate CHANGE id id int(11) auto_increment NOT NULL FIRST;
+CREATE UNIQUE INDEX referenceRate_currencyFk_IDX USING BTREE ON vn.referenceRate (currencyFk,dated);