diff --git a/README.md b/README.md
index 381e409..ba46500 100644
--- a/README.md
+++ b/README.md
@@ -84,15 +84,35 @@
 ```
 
 ## Le fichier query.json ###
-TODO
+
+Le fichier conf/query.json contient l'ensemble des paramètres de recherche à utiliser pour l'interrogation de l'api HAL
+
+```
+{
+    "fq": [""],         // Liste des filtres a utiliser pour limiter les résultats retournés.
+    "fl": "",           // La liste des champs a retourner dans la recherche, séparés par ,
+    "q": "",            // La requête.
+    "rows": "",         // Le nombre de réponses à retourner.
+    "sort": "",         // Pour trier les résultats.
+    "cursorMark": "*"   // Curseur utilisé pour parcourir plusieurs milliers de résultats.  
+}
+```
 
 ## Le fichier conf.json ###
-TODO
+
+Le fichier de configuration 
+
+```
+{
+    "halApi":"",        // L'adresse url de l'api Hal
+    "max_retry":2       // Nombre des retries en cas d'échec lors de l'interrogation de l'api HAL
+}
+```
 
 ### Codes d'erreur ###
 
-| Code     | Signification                                         | Note(s) |
-| -------- | ------------------------------------------------------| ------- |
-| 1        | Harvest folder already exist.                         |
-| 2        | API-HAL request error.                                |
-| 3        | No result found.                                      |
+| Code              | Signification                                         | Note(s) |
+| ----------------- | ------------------------------------------------------| ------- |
+| FolderExistError  | Harvest folder already exist.                         |
+| FetchError        | API-HAL request error.                                |
+| NoResultFound     | No result found to harvest.                           |
diff --git a/index.js b/index.js
index 2cca386..a9d421c 100644
--- a/index.js
+++ b/index.js
@@ -4,7 +4,7 @@
 const fs = require('graceful-fs');
 const xmlFormatter = require('xml-formatter');
 
-const utils = require('./lib/utils.js');
+const utils = require('./lib/utils');
 const config = require('./conf/conf.json');
 
 const business = {};
@@ -19,16 +19,6 @@
   level2: 1
 };
 
-business.finalJob = function (docObjects, cbFinalJob) {
-  const finalJobLogs = {
-    processLogs: [],
-    errLogs: []
-  };
-  finalJobLogs.processLogs.push(`Harvested TEI-XML file count : ${writtenFilesCount}`);
-  finalJobLogs.processLogs.push(`Harvest path : ${harvestPath}`);
-  return cbFinalJob(null, finalJobLogs);
-};
-
 business.doTheJob = function (docObject, cb) {
   const dateBegin = docObject.halHarvestModifiedDateFrom;
   const dateEnd = docObject.halHarvestModifiedDateTo;
@@ -42,8 +32,8 @@
 
   if (fs.existsSync(harvestPath)) {
     const err = {
-      code: 1,
-      message: harvestPath + ' harvest folder already exist'
+      code: 'FolderExistError',
+      _errMsg: harvestPath + ' harvest folder already exist'
     };
     docObject.error = err;
     return cb(err);
@@ -58,6 +48,16 @@
   requestByQuery(docObject, query, null, 0, cb);
 };
 
+business.finalJob = function (docObjects, cb) {
+  const finalJobLogs = {
+    processLogs: [],
+    errLogs: []
+  };
+  finalJobLogs.processLogs.push(`Harvested TEI-XML file count : ${writtenFilesCount}`);
+  finalJobLogs.processLogs.push(`Harvest path : ${harvestPath}`);
+  return cb(null, finalJobLogs);
+};
+
 /**
  * requestByQuery : search XML-TEI files and harvest.
  * @param  {Object} docObject : le docObject
@@ -85,8 +85,8 @@
     const totalResult = parseInt(res.response.numFound);
     if (totalResult === 0) {
       const _err = {
-        code: 3,
-        message: 'no result found'
+        code: 'NoResultFound',
+        _errMsg: 'no result found to harvest'
       };
       docObject.error = _err;
       return cb(_err);
@@ -130,8 +130,8 @@
       requestByQuery(docObject, query, cursorMark, retryCount, cb);
     } else {
       const _err = {
-        code: 2,
-        message: err.message
+        code: 'FetchError',
+        _errMsg: err.message
       };
       docObject.error = _err;
       return cb(_err);
diff --git a/lib/utils.js b/lib/utils.js
index 3ac3ce3..39b1c6f 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -64,7 +64,7 @@
  * @param  {String} halQueryUrl
  * @param  {String} cursorMark
  */
-utils.getScrollUrl = function getScrollUrl (halQueryUrl, cursorMark) {
+utils.getScrollUrl = function (halQueryUrl, cursorMark) {
   const href = halQueryUrl.href.split('?');
   const urlBase = href[0];
   const sp = new URLSearchParams(href[1]);
@@ -73,11 +73,11 @@
   return `${urlBase}/?${sp.toString()}`;
 };
 
-utils.getHarvestPath = function getHarvestPath (path) {
+utils.getHarvestPath = function (path) {
   return (process.env.CORPUSES_ROOT ? process.env.CORPUSES_ROOT + '/' + path : path);
 };
 
-utils.getProxyAgent = function getProxyAgent () {
+utils.getProxyAgent = function () {
   // Get proxy env vars
   const httpProxy = process.env.HTTP_PROXY ? process.env.HTTP_PROXY : process.env.http_proxy;
   const httpsProxy = process.env.HTTPS_PROXY ? process.env.HTTPS_PROXY : process.env.https_proxy;