diff --git a/public_html/view/groups.php b/public_html/view/groups.php
index 1388051..998cb23 100755
--- a/public_html/view/groups.php
+++ b/public_html/view/groups.php
@@ -82,6 +82,7 @@
 
 		echo "<form class='valid'>";
 			echo "<input id='create_name'  type='text' placeholder='Nom'><br>";
+			echo "<span class='error-msg create_name'></span><br>";
 
 			echo "<select id='create_class'>
 					<option value='-' selected disabled>Type de groupe</option>
@@ -89,6 +90,8 @@
 					<option value='1'>machines</option>
 				</select>";
 
+			echo "<span class='error-msg create_class'></span><br>";
+
 			echo "<button id='create_submit'>Créer</button>";
 		echo "</form>";
 
@@ -115,7 +118,7 @@
 			echo "<input  id='remove_search_id'      type='hidden' value=''>";
 			// Indice du resultat
 			echo "<span class='remove_search_view'>groupe <span class='remove_search_num'>0</span> sur <span class='remove_search_sum'>0</span></span><br><br>";
-			echo "<button id='remove_search_submit' class='search'>Trouver</button><br>";
+			echo "<button id='remove_search_submit' class='search'>Trouver/Suivant</button><br>";
 
 
 			echo "<br><br><hr class='OR' data-label='PUIS' /><br><br>";
@@ -148,11 +151,13 @@
 			echo "<input  id='edit_search_id'      type='hidden' value=''>";
 			// Indice du resultat
 			echo "<span class='edit_search_view'>groupe <span class='edit_search_num'>0</span> sur <span class='edit_search_sum'>0</span></span><br><br>";
-			echo "<button id='edit_search_submit' class='search'>Trouver</button><br>";
+			echo "<button id='edit_search_submit' class='search'>Trouver/Suivant</button><br>";
 
 			echo "<br><br><hr class='OR' data-label='PUIS' /><br><br>";
 
 			echo "<input id='edit_name'  type='text' placeholder='Nom'><br>";
+			echo "<span class='error-msg edit_name'></span><br>";
+
 			echo "<input id='edit_class' type='text' placeholder='Type de groupe' disabled><br>";
 			echo "<button id='edit_submit' disabled>Modifier</button>";
 		echo "</form>";
diff --git a/public_html/view/js/groups.js b/public_html/view/js/groups.js
index 213f452..7110de0 100755
--- a/public_html/view/js/groups.js
+++ b/public_html/view/js/groups.js
@@ -199,7 +199,7 @@ if( section.view.element != null ){
 						console.warn('error loading list of members');
 						return;
 					}
-					
+
 
 					// remove already members
 					var members = (path == 'userDefault/getAll') ? response.users : response.machines;
@@ -249,11 +249,11 @@ if( section.view.element != null ){
 							request.path       = 'machineDefault/link';
 							request.id_machine = memberid;
 						}
-						
+
 
 						// {3} Call link //
 						api.send(request, function(response2){
-	
+
 							// manage error
 							if( response2.error != 0 ){
 								console.warn('cannot link user to group');
@@ -268,7 +268,7 @@ if( section.view.element != null ){
 							newMemberRemoveIcon.setAttribute('class', 'rem-member');
 							newMemberRemoveIcon.setAttribute('data-member', memberid);
 							newMemberRemoveIcon.setAttribute('data-cluster', e.target.getData('cluster'));
-							
+
 							newMemberRemoveIcon.addEventListener('click', section.view.group.remfunc, false);
 
 							var newMember = document.createElement('span');
@@ -289,9 +289,9 @@ if( section.view.element != null ){
 		}, false);
 
 	}
-	
 
-	
+
+
 
 
 }
@@ -319,7 +319,13 @@ if( section.create.element != null ){
 		name:   document.querySelector(section.create.text + '#create_name'),
 		class:  document.querySelector(section.create.text + '#create_class'),
 		submit: document.querySelector(section.create.text + '#create_submit')
-	}
+	};
+
+	// On recupere tous les messages d'erreur
+	section.create.errmsg = {
+		name: document.querySelector(section.create.text + '.error-msg.create_name'),
+		class: document.querySelector(section.create.text + '.error-msg.create_class')
+	};
 
 
 	/* (n) Gestion de l'envoi du formulaire */
@@ -327,6 +333,10 @@ if( section.create.element != null ){
 		// On annule l'envoi de base (PHP)
 		e.preventDefault();
 
+		// On vide les messages erreurs
+		section.create.errmsg.name.innerHTML  =
+		section.create.errmsg.class.innerHTML = '';
+
 		var request = {
 			path: 'clusterDefault/create', // On veut creer un utilisateur
 			name:  section.create.input.name.value,
@@ -334,6 +344,7 @@ if( section.create.element != null ){
 		};
 
 		api.send(request, function(answer){
+
 			if( answer.error == 0 ){ // Tout s'est bien deroule
 				console.log('Groupe cree!');
 
@@ -342,6 +353,15 @@ if( section.create.element != null ){
 				// On vide les champs
 				section.create.input.name.value = '';
 				section.create.input.class.children[0].selected = 'selected';
+
+			}else{ // Erreur
+				console.error('ModuleError::'+answer.error);
+
+				// if missing or incorrect param
+				if( answer.error == 16 || answer.error == 17 ){
+					if( section.create.errmsg[answer.ErrorArguments[0]] != null )
+						section.create.errmsg[answer.ErrorArguments[0]].innerHTML = 'Le champ est manquant ou incorrect !';
+				}
 			}
 
 		});
@@ -603,6 +623,11 @@ if( section.edit.element != null ){
 		submit:          document.querySelector(section.edit.text + '#edit_submit')
 	};
 
+	// On recupere tous les messages d'erreur
+	section.edit.errmsg = {
+		name: document.querySelector(section.edit.text + '.error-msg.edit_name')
+	};
+
 	var lastkeywords_edit = '';
 	var found_edit        = [];
 	var searchindex_edit  = 0;
@@ -742,6 +767,9 @@ if( section.edit.element != null ){
 		// On annule l'envoi de base (PHP)
 		e.preventDefault();
 
+		// On vide les messages erreurs
+		section.edit.errmsg.name.innerHTML = '';
+
 		// Si l'id est defini
 		if( section.edit.input.search.id.value != '' ){
 
@@ -779,8 +807,16 @@ if( section.edit.element != null ){
 					});
 
 
-				}else // Erreur
+				}else{ // Erreur
 					console.error('ModuleError::'+answer.error);
+
+					// if missing or incorrect param
+					if( answer.error == 16 || answer.error == 17 ){
+						if( section.edit.errmsg[answer.ErrorArguments[0]] != null )
+							section.edit.errmsg[answer.ErrorArguments[0]].innerHTML = 'Le champ est manquant ou incorrect !';
+					}
+
+				}
 			});
 
 		}
@@ -1128,7 +1164,7 @@ if( section.permissions.element != null && !section.permissions.member_view ){
 						console.warn('error loading list of members');
 						return;
 					}
-					
+
 
 					// remove already authed
 					var members = response.clusters;
@@ -1171,11 +1207,11 @@ if( section.permissions.element != null && !section.permissions.member_view ){
 							id_source: memberid,
 							id_action: permission_id
 						};
-						
+
 
 						// {3} Call link //
 						api.send(request, function(response2){
-	
+
 							// manage error
 							if( response2.error != 0 ){
 								console.warn('cannot add permission to group');
@@ -1191,7 +1227,7 @@ if( section.permissions.element != null && !section.permissions.member_view ){
 							newMemberRemoveIcon.setAttribute('data-source', memberid);
 							newMemberRemoveIcon.setAttribute('data-target', e.target.getData('target'));
 							newMemberRemoveIcon.setAttribute('data-permission', e.target.getData('permission'));
-							
+
 							newMemberRemoveIcon.addEventListener('click', section.permissions.group.remfunc, false);
 
 							var newMember = document.createElement('span');
diff --git a/public_html/view/js/machines.js b/public_html/view/js/machines.js
index 25cf7bc..65810c7 100755
--- a/public_html/view/js/machines.js
+++ b/public_html/view/js/machines.js
@@ -302,7 +302,12 @@ if( section.create.element != null ){
 	section.create.input = {
 		name:   document.querySelector(section.create.text + '#create_name'),
 		submit: document.querySelector(section.create.text + '#create_submit')
-	}
+	};
+
+	// On recupere tous les messages d'erreur
+	section.create.errmsg = {
+		name: document.querySelector(section.create.text + '.error-msg.create_name')
+	};
 
 
 	/* (2) Gestion de l'envoi du formulaire */
@@ -310,6 +315,9 @@ if( section.create.element != null ){
 		// On annule l'envoi de base (PHP)
 		e.preventDefault();
 
+		// On vide les messages erreurs
+		section.create.errmsg.name.innerHTML = '';
+
 		/* (3) On rédige la requête */
 		var request = {
 			path: 'machineDefault/create', // On veut creer un utilisateur
@@ -326,6 +334,17 @@ if( section.create.element != null ){
 
 
 				section.create.input.submit.anim('active', 1500);
+
+			}else{ // Erreur
+
+				console.error('ModuleError::'+answer.error);
+
+				// if missing or incorrect param
+				if( answer.error == 16 || answer.error == 17 ){
+					if( section.create.errmsg[answer.ErrorArguments[0]] != null )
+						section.create.errmsg[answer.ErrorArguments[0]].innerHTML = 'Le champ est manquant ou incorrect !';
+				}
+
 			}
 
 		});
@@ -567,6 +586,11 @@ if( section.edit.element != null ){
 		submit: document.querySelector(section.edit.text + '#edit_submit')
 	};
 
+	// On recupere tous les messages d'erreur
+	section.edit.errmsg = {
+		name: document.querySelector(section.edit.text + '.error-msg.edit_name')
+	};
+
 	var lastkeywords_edit = '';
 	var found_edit        = [];
 	var searchindex_edit  = 0;
@@ -629,7 +653,6 @@ if( section.edit.element != null ){
 		// On annule l'envoi de base (PHP)
 		e.preventDefault();
 
-
 		/* (1) Si le champ n'est pas vide */
 		if( section.edit.input.search.keyword.value != '' ){
 
@@ -687,6 +710,9 @@ if( section.edit.element != null ){
 		// On annule l'envoi de base (PHP)
 		e.preventDefault();
 
+		// On vide les messages erreurs
+		section.edit.errmsg.name.innerHTML = '';
+
 		// Si l'id est defini
 		if( section.edit.input.search.id.value != '' ){
 
@@ -714,8 +740,16 @@ if( section.edit.element != null ){
 						}
 					});
 
-				}else // Erreur
+				}else{ // Erreur
 					console.error('ModuleError::'+answer.error);
+
+					// if missing or incorrect param
+					if( answer.error == 16 || answer.error == 17 ){
+						if( section.edit.errmsg[answer.ErrorArguments[0]] != null )
+							section.edit.errmsg[answer.ErrorArguments[0]].innerHTML = 'Le champ est manquant ou incorrect !';
+					}
+
+				}
 			});
 
 		}
diff --git a/public_html/view/js/users.js b/public_html/view/js/users.js
index bd2729f..972b138 100755
--- a/public_html/view/js/users.js
+++ b/public_html/view/js/users.js
@@ -340,6 +340,7 @@ if( section.create.element != null ){
 		// On annule l'envoi de base (PHP)
 		e.preventDefault();
 
+		// On vide les messages erreurs
 		section.create.errmsg.code.innerHTML          =
 			section.create.errmsg.username.innerHTML  =
 			section.create.errmsg.firstname.innerHTML =
@@ -370,8 +371,12 @@ if( section.create.element != null ){
 
 			}else{ // Erreur
 				console.error('ModuleError::'+answer.error);
-				if( /^[^']*'(\w+)'/i.test(answer.ErrorDescription) )
-					section.create.errmsg[RegExp.$1].innerHTML = 'Champ manquant ou erronné.';
+
+				// if missing or incorrect param
+				if( answer.error == 16 || answer.error == 17 ){
+					if( section.create.errmsg[answer.ErrorArguments[0]] != null )
+						section.create.errmsg[answer.ErrorArguments[0]].innerHTML = 'Le champ est manquant ou incorrect !';
+				}
 			}
 
 		});
@@ -516,6 +521,7 @@ if( section.remove.element != null ){
 						autofill_remove();
 					}
 
+
 					// On met à jour la dernière recherche
 					lastkeywords_remove = getUsers.keywords;
 				});
@@ -577,8 +583,10 @@ if( section.remove.element != null ){
 					autofill_remove();
 
 
-				}else                          // Erreur
+				}else // Erreur
 					console.error('ModuleError::'+answer.error);
+
+
 			});
 
 		}
@@ -625,6 +633,15 @@ if( section.edit.element != null ){
 		submit:    document.querySelector(section.edit.text + '#edit_submit')
 	};
 
+	// On recupere tous les messages d'erreur
+	section.edit.errmsg = {
+		code:      document.querySelector(section.edit.text + '.error-msg.edit_code'),
+		username:  document.querySelector(section.edit.text + '.error-msg.edit_username'),
+		firstname: document.querySelector(section.edit.text + '.error-msg.edit_firstname'),
+		lastname:  document.querySelector(section.edit.text + '.error-msg.edit_lastname'),
+		mail:      document.querySelector(section.edit.text + '.error-msg.edit_mail')
+	};
+
 	/* (1) Gestion du code RFID */
 	createChecker.append( section.edit.input.code, format_code, '01-AB-CD-23');
 	section.edit.input.code.addEventListener('keyup', function(e){
@@ -761,6 +778,13 @@ if( section.edit.element != null ){
 		// On annule l'envoi de base (PHP)
 		e.preventDefault();
 
+		// On vide les messages erreurs
+		section.edit.errmsg.code.innerHTML          =
+			section.edit.errmsg.username.innerHTML  =
+			section.edit.errmsg.firstname.innerHTML =
+			section.edit.errmsg.lastname.innerHTML  =
+			section.edit.errmsg.mail.innerHTML      = '';
+
 		// Si l'id est defini
 		if( section.edit.input.search.id.value != '' ){
 
@@ -793,8 +817,16 @@ if( section.edit.element != null ){
 					});
 
 
-				}else // Erreur
+				}else{ // Erreur
 					console.error('ModuleError::'+answer.error);
+
+					// if missing or incorrect param
+					if( answer.error == 16 || answer.error == 17 ){
+						if( section.edit.errmsg[answer.ErrorArguments[0]] != null )
+							section.edit.errmsg[answer.ErrorArguments[0]].innerHTML = 'Le champ est manquant ou incorrect !';
+					}
+
+				}
 			});
 
 		}
diff --git a/public_html/view/machines.php b/public_html/view/machines.php
index eb1d607..2ca2baa 100755
--- a/public_html/view/machines.php
+++ b/public_html/view/machines.php
@@ -71,6 +71,7 @@
 
 		echo "<form class='valid'>";
 			echo "<input id='create_name' type='text' placeholder='Name'><br>";
+			echo "<span class='error-msg create_name'></span><br>";
 			echo "<button id='create_submit'>Créer</button>";
 		echo "</form>";
 
@@ -96,7 +97,7 @@
 			echo "<input  id='remove_search_id'      type='hidden' value=''>";
 			// Indice du resultat
 			echo "<span class='remove_search_view'>machine <span class='remove_search_num'>0</span> sur <span class='remove_search_sum'>0</span></span><br><br>";
-			echo "<button id='remove_search_submit' class='search'>Trouver</button><br>";
+			echo "<button id='remove_search_submit' class='search'>Trouver/Suivant</button><br>";
 
 			echo "<br><br><hr class='OR' data-label='PUIS' /><br><br>";
 
@@ -126,11 +127,12 @@
 			echo "<input  id='edit_search_id'      type='hidden' value=''>";
 			// Indice du resultat
 			echo "<span class='edit_search_view'>machine <span class='edit_search_num'>0</span> sur <span class='edit_search_sum'>0</span></span><br><br>";
-			echo "<button id='edit_search_submit' class='search'>Trouver</button><br>";
+			echo "<button id='edit_search_submit' class='search'>Trouver/Suivant</button><br>";
 
 			echo "<br><br><hr class='OR' data-label='PUIS' /><br><br>";
 
 			echo "<input id='edit_name' type='text' placeholder='Name'><br>";
+			echo "<span class='error-msg edit_name'></span><br>";
 			echo "<button id='edit_submit' disabled>Modifier</button>";
 		echo "</form>";
 
diff --git a/public_html/view/users.php b/public_html/view/users.php
index e2d0d1d..e34d34c 100755
--- a/public_html/view/users.php
+++ b/public_html/view/users.php
@@ -108,7 +108,7 @@
 			echo "<input  id='remove_search_id'      type='hidden' value=''>";
 			// Indice du resultat
 			echo "<span class='remove_search_view'>utilisateur <span class='remove_search_num'>0</span> sur <span class='remove_search_sum'>0</span></span><br><br>";
-			echo "<button id='remove_search_submit' class='search'>Trouver</button><br>";
+			echo "<button id='remove_search_submit' class='search'>Trouver/Suivant</button><br>";
 
 
 			echo "<br><br><hr class='OR' data-label='PUIS' /><br><br>";
@@ -143,20 +143,20 @@
 			echo "<input  id='edit_search_id'      type='hidden' value=''>";
 			// Indice du resultat
 			echo "<span class='edit_search_view'>utilisateur <span class='edit_search_num'>0</span> sur <span class='edit_search_sum'>0</span></span><br><br>";
-			echo "<button id='edit_search_submit' class='search'>Trouver</button><br>";
+			echo "<button id='edit_search_submit' class='search'>Trouver/Suivant</button><br>";
 
 			echo "<br><br><hr class='OR' data-label='PUIS' /><br><br>";
 
 			echo "<input id='edit_code'      type='text' placeholder='CO-DE-RF-ID'><br>";
 			echo "<span class='error-msg edit_code'></span><br>";
 			echo "<input id='edit_username'  type='text' placeholder='Username'><br>";
-			echo "<span class='error-msg create_username'></span><br>";
+			echo "<span class='error-msg edit_username'></span><br>";
 			echo "<input id='edit_firstname' type='text' placeholder='Firstname'><br>";
-			echo "<span class='error-msg create_firstname'></span><br>";
+			echo "<span class='error-msg edit_firstname'></span><br>";
 			echo "<input id='edit_lastname'  type='text' placeholder='Lastname'><br>";
-			echo "<span class='error-msg create_lastname'></span><br>";
+			echo "<span class='error-msg edit_lastname'></span><br>";
 			echo "<input id='edit_mail'      type='text' placeholder='Mail'><br>";
-			echo "<span class='error-msg create_mail'></span><br>";
+			echo "<span class='error-msg edit_mail'></span><br>";
 			echo "<button id='edit_submit' disabled>Modifier</button>";
 		echo "</form>";