diff --git a/back/methods/vn-user/privileges.js b/back/methods/vn-user/privileges.js
index 08cfaaae8..05ad4481c 100644
--- a/back/methods/vn-user/privileges.js
+++ b/back/methods/vn-user/privileges.js
@@ -40,44 +40,56 @@ module.exports = Self => {
         const userId = ctx.req.accessToken.userId;
 
         const myOptions = {};
+        let tx;
 
         if (typeof options == 'object')
             Object.assign(myOptions, options);
 
-        const user = await Self.findById(userId, {fields: ['hasGrant']}, myOptions);
+        if (!myOptions.transaction) {
+            tx = await Self.beginTransaction({});
+            myOptions.transaction = tx;
+        };
 
-        const userToUpdate = await Self.findById(id, {
-            fields: ['id', 'name', 'hasGrant', 'roleFk', 'password', 'email'],
-            include: {
-                relation: 'role',
-                scope: {
-                    fields: ['name']
+        try {
+            const user = await Self.findById(userId, {fields: ['hasGrant']}, myOptions);
+
+            const userToUpdate = await Self.findById(id, {
+                fields: ['id', 'name', 'hasGrant', 'roleFk', 'password', 'email'],
+                include: {
+                    relation: 'role',
+                    scope: {
+                        fields: ['name']
+                    }
                 }
-            }
-        }, myOptions);
+            }, myOptions);
 
-        if (!user.hasGrant)
-            throw new UserError(`You don't have grant privilege`);
+            if (!user.hasGrant)
+                throw new UserError(`You don't have grant privilege`);
 
-        const hasRoleFromUser = await Self.hasRole(userId, userToUpdate.role().name, myOptions);
+            const hasRoleFromUser = await Self.hasRole(userId, userToUpdate.role().name, myOptions);
 
-        if (!hasRoleFromUser)
-            throw new UserError(`You don't own the role and you can't assign it to another user`);
-
-        if (hasGrant != null)
-            userToUpdate.hasGrant = hasGrant;
-
-        if (roleFk) {
-            const role = await models.Role.findById(roleFk, {fields: ['name']}, myOptions);
-            const hasRole = await Self.hasRole(userId, role.name, myOptions);
-
-            if (!hasRole)
+            if (!hasRoleFromUser)
                 throw new UserError(`You don't own the role and you can't assign it to another user`);
 
-            userToUpdate.roleFk = roleFk;
-        }
+            if (hasGrant != null)
+                userToUpdate.hasGrant = hasGrant;
 
-        await userToUpdate.save(userToUpdate);
-        await models.Account.sync(userToUpdate.name);
+            if (roleFk) {
+                const role = await models.Role.findById(roleFk, {fields: ['name']}, myOptions);
+                const hasRole = await Self.hasRole(userId, role.name, myOptions);
+
+                if (!hasRole)
+                    throw new UserError(`You don't own the role and you can't assign it to another user`);
+
+                userToUpdate.roleFk = roleFk;
+            }
+
+            await userToUpdate.save(myOptions);
+            await models.Account.sync(userToUpdate.name, null, null, myOptions);
+            await tx.commit();
+        } catch (err) {
+            await tx.rollback();
+            throw err;
+        };
     };
 };
diff --git a/modules/account/back/methods/account/sync.js b/modules/account/back/methods/account/sync.js
index a5befc22c..3ab19eed5 100644
--- a/modules/account/back/methods/account/sync.js
+++ b/modules/account/back/methods/account/sync.js
@@ -30,6 +30,11 @@ module.exports = Self => {
         if (typeof options == 'object')
             Object.assign(myOptions, options);
 
+        if (!myOptions.transaction) {
+            tx = await Self.beginTransaction({});
+            myOptions.transaction = tx;
+        };
+
         const models = Self.app.models;
         const user = await models.VnUser.findOne({
             fields: ['id'],