diff --git a/www/scripts/apps/admin/fields/views/edit.js b/www/scripts/apps/admin/fields/views/edit.js
index 4ae44163d7..2ff44573c9 100644
--- a/www/scripts/apps/admin/fields/views/edit.js
+++ b/www/scripts/apps/admin/fields/views/edit.js
@@ -134,38 +134,43 @@ define([
             return this;
         },
         tagFieldChangedAction: function(e) {
+            var $this = this;
             var fieldTag = $(e.target);
             var fieldTagId = fieldTag.attr("id");
             var fieldTagValue = fieldTag.val();
-            var notValid = "" === fieldTagValue;
 
-            // check for format tag
-            if (notValid) {
-                fieldTag
-                    .closest(".control-group")
-                    .addClass("error")
-                    .find(".help-block")
-                    .empty()
-                    .append(i18n.t("validation_tag_invalid"));
-                // add error
-                AdminFieldApp.errorManager.addModelFieldError(new Error(
-                    this.model, fieldTagId, i18n.t("validation_tag_invalid")
-                ));
-            } else if (fieldTag.closest(".control-group").hasClass("error")) {
-                // remove error
-                AdminFieldApp.errorManager.removeModelFieldError(
-                    this.model, fieldTagId
-                );
+            var onFieldValid = function() {
+                if (fieldTag.closest(".control-group").hasClass("error")) {
+                    // remove error
+                    AdminFieldApp.errorManager.removeModelFieldError(
+                        $this.model, fieldTagId
+                    );
 
-                fieldTag
-                    .closest(".control-group")
-                    .removeClass("error")
-                    .find(".help-block")
-                    .empty();
+                    fieldTag
+                        .closest(".control-group")
+                        .removeClass("error")
+                        .find(".help-block")
+                        .empty();
+                } else {
+                    $this.fieldChangedAction(e);
+                }
             }
 
-            if (!notValid) {
-                this.fieldChangedAction(e);
+            if ("" !== fieldTagValue) {
+                var jqxhr = $.get( "/admin/fields/tags/"+fieldTagValue, onFieldValid).fail(function() {
+                    fieldTag
+                        .closest(".control-group")
+                        .addClass("error")
+                        .find(".help-block")
+                        .empty()
+                        .append(i18n.t("validation_tag_invalid"));
+                    // add error
+                    AdminFieldApp.errorManager.addModelFieldError(new Error(
+                        $this.model, fieldTagId, i18n.t("validation_tag_invalid")
+                    ));
+                });
+            } else {
+                onFieldValid();
             }
         },
         deleteAction: function() {
diff --git a/www/scripts/tests/specs/admin/fields.js b/www/scripts/tests/specs/admin/fields.js
index 23a7024abd..0ba23e9cbd 100644
--- a/www/scripts/tests/specs/admin/fields.js
+++ b/www/scripts/tests/specs/admin/fields.js
@@ -208,6 +208,23 @@ define([
                     var model = new FieldModel({"id": 1, "sbas-id": sbasId, "name": "Categorie", "tag": "XMP:Categorie"});
 
                     this.view = new EditView({"model": model});
+                    AdminFieldApp.fieldsCollection.reset();
+                    AdminFieldApp.fieldsCollection.add({"sbas-id": sbasId, "name": "Categorie", "tag": "XMP:Categorie"});
+                    AdminFieldApp.dcFieldsCollection.add({
+                        "label": "Contributor",
+                        "definition": "An entity responsible for making contributions to the resource.",
+                        "URI": "http://dublincore.org/documents/dces/#contributor"
+                    });
+
+                    AdminFieldApp.saveView = new SaveView();
+                    AdminFieldApp.fieldErrorView = new FieldErrorView();
+                    AdminFieldApp.fieldListView = new ListItemView({
+                        collection: AdminFieldApp.fieldsCollection,
+                        el: AdminFieldApp.$leftBlock
+                    });
+                    // render views
+                    AdminFieldApp.saveView.render();
+                    AdminFieldApp.fieldListView.render();
                 });
 
                 it("render() should return the view object", function() {
@@ -218,12 +235,12 @@ define([
                     this.view.render().el.nodeName.should.equal("DIV");
                 });
 
-                it("should render an error message if provided tag is empty", function() {
+                it("should rnot ender an error message if provided tag is empty", function() {
                    var view =  this.view.render();
 
                     view.$('input#tag').val("").blur();
 
-                    assert.isTrue(view.$('input#tag').closest(".control-group").hasClass("error"));
+                    assert.isFalse(view.$('input#tag').closest(".control-group").hasClass("error"));
                 });
 
                 it("should uncheck vocabulary restricted if provided vocabulary is empty", function() {
@@ -288,6 +305,7 @@ define([
 
         describe("Edge cases", function() {
             beforeEach(function() {
+                AdminFieldApp.fieldsCollection.reset();
                 AdminFieldApp.fieldsCollection.add({"sbas-id": sbasId, "name": "Categorie", "tag": "XMP:Categorie"});
                 AdminFieldApp.dcFieldsCollection.add({
                     "label": "Contributor",