diff --git a/lib/helpers/montaineType.js b/lib/helpers/montaineType.js
index c99a5d114..357d422bd 100644
--- a/lib/helpers/montaineType.js
+++ b/lib/helpers/montaineType.js
@@ -17,9 +17,9 @@ const typingTypes = require(path.resolve('./lib/helpers/typing/types'));
  * @return {data} data - new data generated
  */
 const format = (data, action, object) => {
-  if (!data) throw new AppError('Typing : format data not defined.', { code: 'HELPERS_ERROR' });
+  if (!data) throw new AppError(`Typing : format data not defined : ${data}`, { code: 'HELPERS_ERROR' });
   if (!action) return data;
-  if (!object) throw new AppError('Typing : format object not defined.', { code: 'HELPERS_ERROR' });
+  if (!object) throw new AppError(`Typing : format object not defined : ${object}`, { code: 'HELPERS_ERROR' });
 
   const func = action.split('(')[0];
   const params = action.split('(')[1].slice(0, -1).split(',');
@@ -70,7 +70,8 @@ const prepareFormat = (object, schema) => {
   const keys = tricks.objectDeepKeys(object); // get all keys
   keys.forEach((k) => {
     const value = _.get(object, k);
-    if (!Array.isArray(value) && typeof value !== 'object') {
+    if (!value || value === '') _.unset(object, k);
+    else if (!Array.isArray(value) && typeof value !== 'object') {
       const p = k.split('.');
       let func;
       if (/^\d+$/.test(p[p.length - 1])) { // array
diff --git a/modules/apis/services/apis.service.js b/modules/apis/services/apis.service.js
index 233cb58aa..ddf0d43b8 100644
--- a/modules/apis/services/apis.service.js
+++ b/modules/apis/services/apis.service.js
@@ -110,19 +110,19 @@ exports.load = async (api, start) => {
   result.result = request.data.result;
   // Mapping
   if (result.result && api.mapping && api.mapping !== '') {
-    result.mapping = montaineMap.map(result.result, JSON.parse(api.mapping));
+    result.mapping = montaineMap.map(_.cloneDeep(result.result), JSON.parse(api.mapping));
     result.result = result.mapping;
   }
 
   // Typing
   if (result.result && api.typing && api.typing !== '') {
-    result.typing = montaineType.type(result.result, JSON.parse(api.typing));
+    result.typing = montaineType.type(_.cloneDeep(result.result), JSON.parse(api.typing));
     result.result = result.typing;
   }
   // prepare for save
   if (result.result) {
-    result.prepare = montaineSave.prepare(result.result, start);
-    result.mongo = montaineSave.save(result.prepare, start);
+    result.prepare = montaineSave.prepare(_.cloneDeep(result.result), start);
+    result.mongo = montaineSave.save(_.cloneDeep(result.prepare), start);
     result.result = result.mongo;
     if (api.savedb) result.result = await ApisRepository.import(api.slug, result.result);
   }