diff --git a/core/displayablegraph.class.inc.php b/core/displayablegraph.class.inc.php
index 6026d8581..d7e67c94a 100644
--- a/core/displayablegraph.class.inc.php
+++ b/core/displayablegraph.class.inc.php
@@ -1541,7 +1541,7 @@ class DisplayableGraph extends SimpleGraph
 		}
 		catch(err)
 		{
-			alert(err);
+			CombodoModal.OpenErrorModal(err);
 		}
 	}
 EOF
diff --git a/js/dashboard.js b/js/dashboard.js
index 6c72ae86c..6441ed317 100644
--- a/js/dashboard.js
+++ b/js/dashboard.js
@@ -406,7 +406,7 @@ $(function()
 					{
 						if(data.result.error !== '')
 						{
-							alert(data.result.error);
+							CombodoModal.OpenErrorModal(data.result.error);
 							me.element.dialog('close');
 						}
 						else
diff --git a/js/extkeywidget.js b/js/extkeywidget.js
index 1f0818f9d..16609ae73 100644
--- a/js/extkeywidget.js
+++ b/js/extkeywidget.js
@@ -769,7 +769,7 @@ function ExtKeyWidget(id, sTargetClass, sFilter, sTitle, bSelectMode, oWizHelper
 					$('#fstatus_'+me.id).html('');
 					if (data.id == 0) {
 						$('#label_'+me.id).removeClass('ac_dlg_loading');
-						alert(data.error);
+						CombodoModal.OpenErrorModal(data.error);
 					} else if (me.bSelectMode) {
 						// Add the newly created object to the drop-down list and select it
 						/*$('<option/>', { value : data.id }).html(data.name).appendTo('#'+me.id);
diff --git a/js/forms-json-utils.js b/js/forms-json-utils.js
index e58cab244..cf0d1e1f0 100644
--- a/js/forms-json-utils.js
+++ b/js/forms-json-utils.js
@@ -155,7 +155,7 @@ function CheckFields(sFormId, bDisplayAlert)
 // if some fields are in wait, no submit is allowed
 	if ($('#'+sFormId+' .blockMsg').length>0)
 	{
-		alert(Dict.S('UI:Button:Wait'));
+		CombodoModal.OpenWarningModal(Dict.S('UI:Button:Wait'));
 		return false;
 	}
 
@@ -178,7 +178,7 @@ function CheckFields(sFormId, bDisplayAlert)
 		if (bDisplayAlert)
 		{
 			activateFirstTabWithError(sFormId);
-			alert(Dict.S('UI:FillAllMandatoryFields'));
+			CombodoModal.OpenErrorModal(Dict.S('UI:FillAllMandatoryFields'));
 		}
 		$('#'+sFormId+' :submit').prop('disable', false);
 		$('#'+sFormId+' :button[type=submit]').prop('disable', false);
diff --git a/js/layouts/activity-panel/activity-panel.js b/js/layouts/activity-panel/activity-panel.js
index 6993cc0f7..924fdd4b3 100644
--- a/js/layouts/activity-panel/activity-panel.js
+++ b/js/layouts/activity-panel/activity-panel.js
@@ -953,13 +953,11 @@ $(function()
 					'json'
 					)
 					.fail(function (oXHR, sStatus, sErrorThrown) {
-						// TODO 3.0.0: Maybe we could have a centralized dialog to display error messages?
-						alert(sErrorThrown);
+						CombodoModal.OpenErrorModal(sErrorThrown);
 					})
 					.done(function (oData) {
 						if (false === oData.data.success) {
-							// TODO 3.0.0: Same comment as the fail() callback
-							alert(oData.data.error_message);
+							CombodoModal.OpenErrorModal(oData.data.error_message);
 							return false;
 						}
 
@@ -1142,8 +1140,7 @@ $(function()
 									sNewLockStatus = me.enums.lock_status.locked_by_someone_else;
 								} else if ('expired' === oData.operation) {
 									sNewLockStatus = me.enums.lock_status.unknown;
-									// TODO 3.0.0: Maybe we could use a centralized dialog to display error message?
-									alert(oData.popup_message);
+									CombodoModal.OpenErrorModal(oData.popup_message);
 								}
 							} else {
 								sNewLockStatus = me.enums.lock_status.locked_by_myself;
@@ -1392,13 +1389,11 @@ $(function()
 					'json'
 					)
 					.fail(function (oXHR, sStatus, sErroThrown) {
-						// TODO 3.0.0: Maybe we could have a centralized dialog to display error messages?
-						alert(sErrorThrown);
+						CombodoModal.OpenErrorModal(sErrorThrown);
 					})
 					.done(function (oData) {
 						if (false === oData.data.success) {
-							// TODO 3.0.0: Same comment as the fail() callback
-							alert(oData.data.error_message);
+							CombodoModal.OpenErrorModal(oData.data.error_message);
 							return false;
 						}
 
diff --git a/js/links/links_view_table_widget.js b/js/links/links_view_table_widget.js
index 461860a0b..488d767b6 100644
--- a/js/links/links_view_table_widget.js
+++ b/js/links/links_view_table_widget.js
@@ -38,7 +38,7 @@ $(function()
 				if (data.data.success === true) {
 					me.$tableSettingsDialog.DataTableSettings('DoRefresh');
 				} else {
-					CombodoModal.OpenInformativeModal(data.data.error_message, 'error');
+					CombodoModal.OpenErrorModal(data.data.error_message);
 				}
 			});
 		},
@@ -59,7 +59,7 @@ $(function()
 				if (data.data.success === true) {
 					me.$tableSettingsDialog.DataTableSettings('DoRefresh');
 				} else {
-					CombodoModal.OpenInformativeModal(data.data.error_message, 'error');
+					CombodoModal.OpenErrorModal(data.data.error_message);
 				}
 			});
 		},
diff --git a/js/utils.js b/js/utils.js
index df5365d68..ccdd4898e 100644
--- a/js/utils.js
+++ b/js/utils.js
@@ -553,7 +553,7 @@ function ExportInitButton(sSelector) {
 				var aMessages = $('#export-form').data('validation_messages');
 
 				if (aMessages.length > 0) {
-					alert(aMessages.join(''));
+					CombodoModal.OpenErrorModal(aMessages.join(''));
 					return;
 				}
 				if ($(this).hasClass('ui-button')) {
@@ -1210,6 +1210,12 @@ const CombodoInlineImage = {
  * @since 3.1.0
  */
 let CombodoModal = {
+
+	INFORMATIVE_MODAL_SEVERITY_SUCCESS : 'success',
+	INFORMATIVE_MODAL_SEVERITY_INFORMATION : 'information',
+	INFORMATIVE_MODAL_SEVERITY_WARNING : 'warning',
+	INFORMATIVE_MODAL_SEVERITY_ERROR : 'error',
+	
 	/**
 	 * Close all opened modals on the page
 	 *
@@ -1421,5 +1427,45 @@ let CombodoModal = {
 	OpenInformativeModal: function(sMessage,sSeverity, oOptions) {
 		// Meant for overlaoding
 		CombodoJSConsole.Debug('CombodoModal.OpenInformativeModal not implemented');
-	}
+	},
+
+	/**
+	 * Open a standard informative modal for success messages.
+	 *
+	 * @param sMessage string Informative success message to be displayed in the modal
+	 * @param oOptions array @see CombodoModal.OpenModal
+	 */
+	OpenSuccessModal: function(sMessage, oOptions) {
+		CombodoModal.OpenInformativeModal(sMessage, CombodoModal.INFORMATIVE_MODAL_SEVERITY_SUCCESS, oOptions);
+	},
+
+	/**
+	 * Open a standard informative modal for information messages.
+	 *
+	 * @param sMessage string Informative information success to be displayed in the modal
+	 * @param oOptions array @see CombodoModal.OpenModal
+	 */
+	OpenInformationModal: function(sMessage, oOptions) {
+		CombodoModal.OpenInformativeModal(sMessage, CombodoModal.INFORMATIVE_MODAL_SEVERITY_INFORMATION, oOptions);
+	},
+
+	/**
+	 * Open a standard informative modal for warning messages.
+	 *
+	 * @param sMessage string Informative warning message to be displayed in the modal
+	 * @param oOptions array @see CombodoModal.OpenModal
+	 */
+	OpenWarningModal: function(sMessage, oOptions) {
+		CombodoModal.OpenInformativeModal(sMessage, CombodoModal.INFORMATIVE_MODAL_SEVERITY_WARNING, oOptions);
+	},
+
+	/**
+	 * Open a standard informative error modal for success messages.
+	 *
+	 * @param sMessage string Informative error message to be displayed in the modal
+	 * @param oOptions array @see CombodoModal.OpenModal
+	 */
+	OpenErrorModal: function(sMessage, oOptions) {
+		CombodoModal.OpenInformativeModal(sMessage, CombodoModal.INFORMATIVE_MODAL_SEVERITY_ERROR, oOptions);
+	},
 };
\ No newline at end of file
diff --git a/pages/UI.php b/pages/UI.php
index 02ce22fdf..976a1ef67 100644
--- a/pages/UI.php
+++ b/pages/UI.php
@@ -1415,7 +1415,7 @@ try
 								$sSeverity = 'info';
 							}
 							$sIssueDesc = Dict::Format('UI:ObjectCouldNotBeWritten',$sIssues);
-							$oP->add_ready_script("alert('".addslashes($sIssueDesc)."');");
+							$oP->add_ready_script("CombodoModal.OpenErrorModal('".addslashes($sIssueDesc)."');");
 						}
 						else
 						{
diff --git a/pages/csvimport.php b/pages/csvimport.php
index 3c9113a1e..c9a729c4f 100644
--- a/pages/csvimport.php
+++ b/pages/csvimport.php
@@ -1052,16 +1052,16 @@ EOF
 		});
 		if (!bMappingOk)
 		{
-			alert("$sAlertIncompleteMapping");
+			CombodoModal.OpenErrorModal('$sAlertIncompleteMapping');
 		}
 		if (bMultipleMapping)
 		{
-			alert("$sAlertMultipleMapping");
+			CombodoModal.OpenErrorModal('$sAlertMultipleMapping');
 		}
 		if (!bSearchOk)
 		{
 				bResult = false; 
-				alert("$sAlertNoSearchCriteria");
+				CombodoModal.OpenErrorModal('$sAlertNoSearchCriteria');
 		}
 		
 		if (bResult)
diff --git a/sources/Controller/Base/Layout/ObjectController.php b/sources/Controller/Base/Layout/ObjectController.php
index a985506e0..2e6beeb2a 100644
--- a/sources/Controller/Base/Layout/ObjectController.php
+++ b/sources/Controller/Base/Layout/ObjectController.php
@@ -101,7 +101,7 @@ class ObjectController extends AbstractController
                             window.bInSubmit = false;
                             oForm.attr('data-form-state', 'default');
                             /* Display error popup */
-							CombodoModal.OpenInformativeModal(data.data.error_message, 'error');
+							CombodoModal.OpenErrorModal(data.data.error_message);
 						}
 					});
 				}
diff --git a/sources/Controller/Links/LinksetController.php b/sources/Controller/Links/LinksetController.php
index 0b4f43836..f25e151ad 100644
--- a/sources/Controller/Links/LinksetController.php
+++ b/sources/Controller/Links/LinksetController.php
@@ -191,7 +191,7 @@ class LinkSetController extends AbstractController
                             window.bInSubmit = false;
                             oForm.attr('data-form-state', 'default');
                             /* Display error popup */
-							CombodoModal.OpenInformativeModal(data.data.error_message, 'error');
+							CombodoModal.OpenErrorModal(data.data.error_message);
 						}
 					});
 				}
diff --git a/webservices/export-v2.php b/webservices/export-v2.php
index 2da079a1c..a2effb3d4 100644
--- a/webservices/export-v2.php
+++ b/webservices/export-v2.php
@@ -179,7 +179,7 @@ $('#export-form').on('submit', function() {
 		var sOQL = $('#textarea_oql').val();
 		if (sOQL == '')
 		{
-			alert($sJSEmptyOQL);
+			CombodoModal.OpenErrorModal($sJSEmptyOQL);
 			return false;
 		}
 	}
@@ -188,7 +188,7 @@ $('#export-form').on('submit', function() {
 		var sQueryId = $('#select_phrasebook').val();
 		if (sQueryId == '')
 		{
-			alert($sJSEmptyQueryId);
+			CombodoModal.OpenErrorModal($sJSEmptyQueryId);
 			return false;
 		}
 	}