diff --git a/VERSIONS_WIP/102397 b/VERSIONS_WIP/102397
new file mode 100644
index 0000000000000000000000000000000000000000..a2d29c45c32097c2f6c4bfd5f11d90bb925de20d
--- /dev/null
+++ b/VERSIONS_WIP/102397
@@ -0,0 +1 @@
+ - ticket #102397 : Le nombre d'entrées pour les facettes dynamiques peut maintenant aller jusqu'à 1 679 615 (au lieu de 9 999 auparavant).
\ No newline at end of file
diff --git a/library/Class/CodifThesaurus.php b/library/Class/CodifThesaurus.php
index 9488d3245abeb91ce85582b3db5fa9430c8234f5..6e1d9b36c6a6e410f7d2e6673f9c720fab685111 100644
--- a/library/Class/CodifThesaurus.php
+++ b/library/Class/CodifThesaurus.php
@@ -243,9 +243,10 @@ class CodifThesaurusLoader extends Storm_Model_Loader {
 
 
   public function incrementId($id) {
-    $last=substr($id,strlen($id)-4);
+    $last=base_convert(substr($id,strlen($id)-4), 36, 10);
     $first_part=substr($id,0,strlen($id)-4);
     $last++;
+    $last = strtoupper(base_convert($last, 10, 36));
     return $first_part.$this->getCodeSur4Chiffres($last,true);
   }
 
@@ -731,7 +732,7 @@ class Class_CodifThesaurus extends Storm_Model_Abstract {
     $this->checkAttribute('id_thesaurus',
                           $my_key != $empty_key,
                           $this->_('Nombre maximum d\'élément à ce niveau déjà atteint (%s)',
-                                   str_repeat('9', self::ID_KEY_LENGTH)));
+                                   str_repeat('Z', self::ID_KEY_LENGTH)));
   }
 
 
diff --git a/tests/library/Class/CodifThesaurusTest.php b/tests/library/Class/CodifThesaurusTest.php
index 9cb92269d4caab0e0faf85b031e9814596326c6d..8957f4d7e1d614747fdb26c063f3228ceaf82e35 100644
--- a/tests/library/Class/CodifThesaurusTest.php
+++ b/tests/library/Class/CodifThesaurusTest.php
@@ -58,14 +58,20 @@ class CodifThesaurusCommonTest extends ModelTestCase {
 
 
   /** @test */
-  public function incrementYYYY0001ShouldReturnYYYY0002() {
-    $this->assertEquals('YYYY1000', Class_CodifThesaurus::incrementId('YYYY0999'));
+  public function incrementYYYY0999ShouldReturnYYYY099A() {
+    $this->assertEquals('YYYY099A', Class_CodifThesaurus::incrementId('YYYY0999'));
   }
 
 
   /** @test */
   public function incrementYYYY00ZZShouldReturnYYYY0100() {
-    $this->assertEquals('YYYY01AA', Class_CodifThesaurus::incrementId('YYYY00ZZ'));
+    $this->assertEquals('YYYY0100', Class_CodifThesaurus::incrementId('YYYY00ZZ'));
+  }
+
+
+  /** @test */
+  public function incrementYYYY0009ShouldReturnYYYY000A() {
+    $this->assertEquals('YYYY000A', Class_CodifThesaurus::incrementId('YYYY0009'));
   }
 
 
@@ -203,7 +209,7 @@ class CodifThesaurusTooManyValuesTest extends ModelTestCase {
                     'rules' => null]);
 
     $this->fixture('Class_CodifThesaurus',
-                   ['id_thesaurus' => 'TEST9999',
+                   ['id_thesaurus' => 'TESTZZZZ',
                     'id_origine' => 'RIME',
                     'libelle' => 'rime',
                     'code' => 'TEST',
@@ -215,7 +221,7 @@ class CodifThesaurusTooManyValuesTest extends ModelTestCase {
 
 
   /** @test */
-  public function shouldNotInsertMoreThan9999Child() {
+  public function shouldNotInsertMoreThanZZZZChild() {
     Class_CodifThesaurus::find(723)
       ->getOrCreateChild(strtoupper('métiers de la recherche'),
                          'métiers de la recherche');