diff --git a/amt/core/exception_handlers.py b/amt/core/exception_handlers.py
index 1806eb23..e8eac482 100644
--- a/amt/core/exception_handlers.py
+++ b/amt/core/exception_handlers.py
@@ -1,5 +1,8 @@
 import logging
+from gettext import gettext as _
+from typing import Any
 
+from babel.support import NullTranslations
 from fastapi import Request, status
 from fastapi.exceptions import RequestValidationError
 from fastapi.responses import HTMLResponse
@@ -13,6 +16,21 @@
 
 logger = logging.getLogger(__name__)
 
+CUSTOM_MESSAGES = {
+    "string_too_short": _("String should have at least {min_length} characters"),
+    "missing": _("Field required"),
+}
+
+
+def translate_pydantic_exception(err: dict[str, Any], translations: NullTranslations) -> str:
+    message: str | None = CUSTOM_MESSAGES.get(err["type"], None)
+
+    if message:
+        custom_message = translations.gettext(message)
+        return custom_message.format(**err["ctx"]) if "ctx" in err else custom_message
+
+    return err["msg"]
+
 
 async def general_exception_handler(request: Request, exc: Exception) -> HTMLResponse:
     exception_name = exc.__class__.__name__
@@ -27,8 +45,10 @@ async def general_exception_handler(request: Request, exc: Exception) -> HTMLRes
     elif isinstance(exc, StarletteHTTPException):
         message = AMTNotFound().getmessage(translations) if exc.status_code == status.HTTP_404_NOT_FOUND else exc.detail
     elif isinstance(exc, RequestValidationError):
-        messages: list[str] = [f"{error['loc'][-1]}: {error['msg']}" for error in exc.errors()]
-        message = "\n".join(messages)
+        # i assume only pydantic errors get into this section
+        message = exc.errors()
+        for err in message:
+            err["msg"] = translate_pydantic_exception(err, translations)
 
     status_code = status.HTTP_500_INTERNAL_SERVER_ERROR
     if isinstance(exc, StarletteHTTPException):
@@ -42,6 +62,7 @@ async def general_exception_handler(request: Request, exc: Exception) -> HTMLRes
         if request.state.htmx
         else f"errors/{exception_name}_{status_code}.html.j2"
     )
+
     fallback_template_name = "errors/_Exception.html.j2" if request.state.htmx else "errors/Exception.html.j2"
 
     response: HTMLResponse | None = None
diff --git a/amt/locale/base.pot b/amt/locale/base.pot
index 72295496..96ee46b5 100644
--- a/amt/locale/base.pot
+++ b/amt/locale/base.pot
@@ -133,7 +133,7 @@ msgstr ""
 msgid "Model"
 msgstr ""
 
-#: amt/api/navigation.py:59 amt/site/templates/projects/new.html.j2:145
+#: amt/api/navigation.py:59 amt/site/templates/projects/new.html.j2:147
 msgid "Instruments"
 msgstr ""
 
@@ -161,6 +161,14 @@ msgstr ""
 msgid "Exception of application"
 msgstr ""
 
+#: amt/core/exception_handlers.py:20
+msgid "String should have at least {min_length} characters"
+msgstr ""
+
+#: amt/core/exception_handlers.py:21
+msgid "Field required"
+msgstr ""
+
 #: amt/core/exceptions.py:20
 msgid ""
 "An error occurred while configuring the options for '{field}'. Please "
@@ -263,6 +271,14 @@ msgstr ""
 msgid "An error occurred. Please try again later"
 msgstr ""
 
+#: amt/site/templates/errors/_RequestValidationError_400.html.j2:3
+msgid "There are some errors"
+msgstr ""
+
+#: amt/site/templates/errors/_RequestValidationError_400.html.j2:5
+msgid "There is one error:"
+msgstr ""
+
 #: amt/site/templates/layouts/base.html.j2:11
 msgid "Algorithmic Management Toolkit (AMT)"
 msgstr ""
@@ -415,7 +431,7 @@ msgstr ""
 
 #: amt/site/templates/parts/filter_list.html.j2:99
 #: amt/site/templates/projects/details_info.html.j2:24
-#: amt/site/templates/projects/new.html.j2:37
+#: amt/site/templates/projects/new.html.j2:38
 msgid "Lifecycle"
 msgstr ""
 
@@ -601,27 +617,27 @@ msgstr ""
 msgid "Algorithm System name"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:26
+#: amt/site/templates/projects/new.html.j2:27
 msgid "Name of the algorithm system"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:39
+#: amt/site/templates/projects/new.html.j2:41
 msgid "Select the lifecycle your algorithm system is currently in."
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:40
+#: amt/site/templates/projects/new.html.j2:42
 msgid "For more information on lifecycle, read the"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:43
+#: amt/site/templates/projects/new.html.j2:45
 msgid "Algorithm Framework"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:61
+#: amt/site/templates/projects/new.html.j2:63
 msgid "AI Act Profile"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:63
+#: amt/site/templates/projects/new.html.j2:65
 msgid ""
 "The AI Act profile provides insight into, among other things, the type of"
 " AI system and the associated obligations from the European AI Act. If "
@@ -630,33 +646,33 @@ msgid ""
 "tree."
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:70
+#: amt/site/templates/projects/new.html.j2:72
 msgid "Find your AI Act profile"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:128
+#: amt/site/templates/projects/new.html.j2:130
 msgid "Yes"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:138
+#: amt/site/templates/projects/new.html.j2:140
 msgid "No"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:147
+#: amt/site/templates/projects/new.html.j2:149
 msgid ""
 "Overview of instruments for the responsible development, deployment, "
 "assessment and monitoring of algorithms and AI-systems."
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:155
+#: amt/site/templates/projects/new.html.j2:157
 msgid "Choose one or more instruments"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:177
+#: amt/site/templates/projects/new.html.j2:181
 msgid "Create Algorithm System"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:195
+#: amt/site/templates/projects/new.html.j2:198
 msgid "Copy results and close"
 msgstr ""
 
diff --git a/amt/locale/en_US/LC_MESSAGES/messages.mo b/amt/locale/en_US/LC_MESSAGES/messages.mo
index 1e457b00..fb15ccaa 100644
Binary files a/amt/locale/en_US/LC_MESSAGES/messages.mo and b/amt/locale/en_US/LC_MESSAGES/messages.mo differ
diff --git a/amt/locale/en_US/LC_MESSAGES/messages.po b/amt/locale/en_US/LC_MESSAGES/messages.po
index 4a280015..d78b5d85 100644
--- a/amt/locale/en_US/LC_MESSAGES/messages.po
+++ b/amt/locale/en_US/LC_MESSAGES/messages.po
@@ -134,7 +134,7 @@ msgstr ""
 msgid "Model"
 msgstr ""
 
-#: amt/api/navigation.py:59 amt/site/templates/projects/new.html.j2:145
+#: amt/api/navigation.py:59 amt/site/templates/projects/new.html.j2:147
 msgid "Instruments"
 msgstr ""
 
@@ -162,6 +162,14 @@ msgstr ""
 msgid "Exception of application"
 msgstr ""
 
+#: amt/core/exception_handlers.py:20
+msgid "String should have at least {min_length} characters"
+msgstr ""
+
+#: amt/core/exception_handlers.py:21
+msgid "Field required"
+msgstr ""
+
 #: amt/core/exceptions.py:20
 msgid ""
 "An error occurred while configuring the options for '{field}'. Please "
@@ -264,6 +272,14 @@ msgstr ""
 msgid "An error occurred. Please try again later"
 msgstr ""
 
+#: amt/site/templates/errors/_RequestValidationError_400.html.j2:3
+msgid "There are some errors"
+msgstr ""
+
+#: amt/site/templates/errors/_RequestValidationError_400.html.j2:5
+msgid "There is one error:"
+msgstr ""
+
 #: amt/site/templates/layouts/base.html.j2:11
 msgid "Algorithmic Management Toolkit (AMT)"
 msgstr ""
@@ -416,7 +432,7 @@ msgstr ""
 
 #: amt/site/templates/parts/filter_list.html.j2:99
 #: amt/site/templates/projects/details_info.html.j2:24
-#: amt/site/templates/projects/new.html.j2:37
+#: amt/site/templates/projects/new.html.j2:38
 msgid "Lifecycle"
 msgstr ""
 
@@ -602,27 +618,27 @@ msgstr ""
 msgid "Algorithm System name"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:26
+#: amt/site/templates/projects/new.html.j2:27
 msgid "Name of the algorithm system"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:39
+#: amt/site/templates/projects/new.html.j2:41
 msgid "Select the lifecycle your algorithm system is currently in."
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:40
+#: amt/site/templates/projects/new.html.j2:42
 msgid "For more information on lifecycle, read the"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:43
+#: amt/site/templates/projects/new.html.j2:45
 msgid "Algorithm Framework"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:61
+#: amt/site/templates/projects/new.html.j2:63
 msgid "AI Act Profile"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:63
+#: amt/site/templates/projects/new.html.j2:65
 msgid ""
 "The AI Act profile provides insight into, among other things, the type of"
 " AI system and the associated obligations from the European AI Act. If "
@@ -631,33 +647,33 @@ msgid ""
 "tree."
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:70
+#: amt/site/templates/projects/new.html.j2:72
 msgid "Find your AI Act profile"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:128
+#: amt/site/templates/projects/new.html.j2:130
 msgid "Yes"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:138
+#: amt/site/templates/projects/new.html.j2:140
 msgid "No"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:147
+#: amt/site/templates/projects/new.html.j2:149
 msgid ""
 "Overview of instruments for the responsible development, deployment, "
 "assessment and monitoring of algorithms and AI-systems."
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:155
+#: amt/site/templates/projects/new.html.j2:157
 msgid "Choose one or more instruments"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:177
+#: amt/site/templates/projects/new.html.j2:181
 msgid "Create Algorithm System"
 msgstr ""
 
-#: amt/site/templates/projects/new.html.j2:195
+#: amt/site/templates/projects/new.html.j2:198
 msgid "Copy results and close"
 msgstr ""
 
diff --git a/amt/locale/nl_NL/LC_MESSAGES/messages.mo b/amt/locale/nl_NL/LC_MESSAGES/messages.mo
index 8e677db1..dc090db2 100644
Binary files a/amt/locale/nl_NL/LC_MESSAGES/messages.mo and b/amt/locale/nl_NL/LC_MESSAGES/messages.mo differ
diff --git a/amt/locale/nl_NL/LC_MESSAGES/messages.po b/amt/locale/nl_NL/LC_MESSAGES/messages.po
index 4090ede8..e71e4efb 100644
--- a/amt/locale/nl_NL/LC_MESSAGES/messages.po
+++ b/amt/locale/nl_NL/LC_MESSAGES/messages.po
@@ -134,7 +134,7 @@ msgstr "Data"
 msgid "Model"
 msgstr "Model"
 
-#: amt/api/navigation.py:59 amt/site/templates/projects/new.html.j2:145
+#: amt/api/navigation.py:59 amt/site/templates/projects/new.html.j2:147
 msgid "Instruments"
 msgstr "Instrumenten"
 
@@ -162,6 +162,14 @@ msgstr "Verboden AI"
 msgid "Exception of application"
 msgstr "Uitzondering van toepassing"
 
+#: amt/core/exception_handlers.py:20
+msgid "String should have at least {min_length} characters"
+msgstr "Tekst moet minimaal {min_length} tekens bevatten"
+
+#: amt/core/exception_handlers.py:21
+msgid "Field required"
+msgstr "Veld verplicht"
+
 #: amt/core/exceptions.py:20
 msgid ""
 "An error occurred while configuring the options for '{field}'. Please "
@@ -272,6 +280,14 @@ msgstr "Er is een fout opgetreden"
 msgid "An error occurred. Please try again later"
 msgstr "Er is een fout opgetreden. Probeer het later opnieuw."
 
+#: amt/site/templates/errors/_RequestValidationError_400.html.j2:3
+msgid "There are some errors"
+msgstr "r zijn enkele fouten"
+
+#: amt/site/templates/errors/_RequestValidationError_400.html.j2:5
+msgid "There is one error:"
+msgstr "Er is één fout:"
+
 #: amt/site/templates/layouts/base.html.j2:11
 msgid "Algorithmic Management Toolkit (AMT)"
 msgstr "Algoritme Management Toolkit (AMT)"
@@ -434,7 +450,7 @@ msgstr "Algoritmesysteem naam"
 
 #: amt/site/templates/parts/filter_list.html.j2:99
 #: amt/site/templates/projects/details_info.html.j2:24
-#: amt/site/templates/projects/new.html.j2:37
+#: amt/site/templates/projects/new.html.j2:38
 msgid "Lifecycle"
 msgstr "Levenscyclus"
 
@@ -620,31 +636,31 @@ msgstr "Creëer een Algoritmesysteem"
 
 #: amt/site/templates/projects/new.html.j2:23
 msgid "Algorithm System name"
-msgstr "Naam algoritmesysteem"
+msgstr "Algoritme Systeem naam"
 
-#: amt/site/templates/projects/new.html.j2:26
+#: amt/site/templates/projects/new.html.j2:27
 msgid "Name of the algorithm system"
-msgstr "Naam van het algoritmesysteem"
+msgstr "Nieuw algoritmesysteem"
 
-#: amt/site/templates/projects/new.html.j2:39
+#: amt/site/templates/projects/new.html.j2:41
 msgid "Select the lifecycle your algorithm system is currently in."
 msgstr ""
 "Selecteer de levenscyclus waarin uw algoritmesysteem zich momenteel "
 "bevindt."
 
-#: amt/site/templates/projects/new.html.j2:40
+#: amt/site/templates/projects/new.html.j2:42
 msgid "For more information on lifecycle, read the"
 msgstr "Lees voor meer meer informatie over levenscyclus het"
 
-#: amt/site/templates/projects/new.html.j2:43
+#: amt/site/templates/projects/new.html.j2:45
 msgid "Algorithm Framework"
 msgstr "Algoritmekader"
 
-#: amt/site/templates/projects/new.html.j2:61
+#: amt/site/templates/projects/new.html.j2:63
 msgid "AI Act Profile"
 msgstr "AI Verordening Profiel"
 
-#: amt/site/templates/projects/new.html.j2:63
+#: amt/site/templates/projects/new.html.j2:65
 msgid ""
 "The AI Act profile provides insight into, among other things, the type of"
 " AI system and the associated obligations from the European AI Act. If "
@@ -656,19 +672,19 @@ msgstr ""
 "onder andere het type AI systeem, de regelgeving die van toepassing is en"
 " de risicocategorie."
 
-#: amt/site/templates/projects/new.html.j2:70
+#: amt/site/templates/projects/new.html.j2:72
 msgid "Find your AI Act profile"
 msgstr "Vind uw AI Act profiel"
 
-#: amt/site/templates/projects/new.html.j2:128
+#: amt/site/templates/projects/new.html.j2:130
 msgid "Yes"
 msgstr "Ja"
 
-#: amt/site/templates/projects/new.html.j2:138
+#: amt/site/templates/projects/new.html.j2:140
 msgid "No"
 msgstr "Nee"
 
-#: amt/site/templates/projects/new.html.j2:147
+#: amt/site/templates/projects/new.html.j2:149
 msgid ""
 "Overview of instruments for the responsible development, deployment, "
 "assessment and monitoring of algorithms and AI-systems."
@@ -676,15 +692,15 @@ msgstr ""
 "Overzicht van aanbevolen instrument voor het verantwoord ontwikkelen, "
 "gebruiken, beoordelen en monitoren van algoritmes en AI-systemen."
 
-#: amt/site/templates/projects/new.html.j2:155
+#: amt/site/templates/projects/new.html.j2:157
 msgid "Choose one or more instruments"
 msgstr "Kies één of meerdere instrumenten"
 
-#: amt/site/templates/projects/new.html.j2:177
+#: amt/site/templates/projects/new.html.j2:181
 msgid "Create Algorithm System"
 msgstr "Creëer Algoritmesysteem"
 
-#: amt/site/templates/projects/new.html.j2:195
+#: amt/site/templates/projects/new.html.j2:198
 msgid "Copy results and close"
 msgstr "Resultaten overnemen en sluiten"
 
diff --git a/amt/site/static/scss/layout.scss b/amt/site/static/scss/layout.scss
index 85bc9933..1453dfcd 100644
--- a/amt/site/static/scss/layout.scss
+++ b/amt/site/static/scss/layout.scss
@@ -286,3 +286,8 @@ main {
 .rvo-table-row td:first-child {
     width: 20%;
 }
+
+.amt-error-message {
+    color: var(--rvo-form-feedback-error-color);
+    font-weight: var(--rvo-form-feedback-error-font-weight);
+}
diff --git a/amt/site/templates/errors/_RequestValidationError_400.html.j2 b/amt/site/templates/errors/_RequestValidationError_400.html.j2
new file mode 100644
index 00000000..9a54ab2d
--- /dev/null
+++ b/amt/site/templates/errors/_RequestValidationError_400.html.j2
@@ -0,0 +1,26 @@
+<div>
+    {% if message|length > 1 %}
+        <h2 class="utrecht-heading-3">{% trans %}There are some errors{% endtrans %}</h2>
+    {% else %}
+        <h2 class="utrecht-heading-3">{% trans %}There is one error:{% endtrans %}</h2>
+    {% endif %}
+    {% for msg in message %}
+        <div>
+            <span style="min-width: 70px; display: inline-block;">{{ msg['loc'][-1] | capitalize }}:</span>
+            <span class="utrecht-icon rvo-icon rvo-icon-foutmelding rvo-icon--md rvo-status-icon-foutmelding rvo-status-icon-foutmelding"
+                  role="img"
+                  aria-label="Foutmelding"></span>
+            <span class="amt-error-message">{{ msg['msg'] }}</span>
+        </div>
+    {% endfor %}
+</div>
+{% for msg in message %}
+    <div id="error-{{ msg['loc'][-1] }}"
+         class="htmx-error-oob rvo-form-feedback rvo-form-feedback--error"
+         hx-swap-oob="true">
+        <span class="utrecht-icon rvo-icon rvo-icon-foutmelding rvo-icon--md rvo-status-icon-foutmelding rvo-status-icon-foutmelding"
+              role="img"
+              aria-label="Foutmelding"></span>
+        <span>{{ msg['msg'] }}</span>
+    </div>
+{% endfor %}
diff --git a/amt/site/templates/projects/new.html.j2 b/amt/site/templates/projects/new.html.j2
index d6cf3037..44e36496 100644
--- a/amt/site/templates/projects/new.html.j2
+++ b/amt/site/templates/projects/new.html.j2
@@ -22,6 +22,7 @@
                                 <div class="rvo-form-field__label">
                                     <label class="rvo-label rvo-label--required">{% trans %}Algorithm System name{% endtrans %}</label>
                                 </div>
+                                <div id="error-name" class="htmx-error-oob"></div>
                                 <input id="name"
                                        placeholder="{% trans %}Name of the algorithm system{% endtrans %}"
                                        name="name"
@@ -35,6 +36,7 @@
                                  class="utrecht-form-field utrecht-form-field--text rvo-form-field">
                                 <div class="rvo-form-field__label">
                                     <label class="rvo-label rvo-label--required">{% trans %}Lifecycle{% endtrans %}</label>
+                                    <div id="error-lifecycle" class="htmx-error-oob"></div>
                                     <p>
                                         {% trans %}Select the lifecycle your algorithm system is currently in.{% endtrans %}
                                         {% trans %}For more information on lifecycle, read the{% endtrans %}
@@ -170,15 +172,16 @@
                             </div>
                         </fieldset>
                     </div>
+                    <div id="errorContainer"></div>
                     <p class="utrecht-button-group">
                         <button class="utrecht-button utrecht-button--primary-action utrecht-button--rvo-md"
                                 type="submit"
-                                id="button-new-project-create">
+                                id="button-new-project-create"
+                                hx-on:click="document.querySelectorAll('div.htmx-error-oob').forEach(e => e.innerHTML = '')">
                             {% trans %}Create Algorithm System{% endtrans %}
                         </button>
                     </p>
                 </form>
-                <div id="errorContainer"></div>
             </div>
         </div>
     </div>
diff --git a/tests/api/routes/test_projects.py b/tests/api/routes/test_projects.py
index e1bf9dee..cdd09045 100644
--- a/tests/api/routes/test_projects.py
+++ b/tests/api/routes/test_projects.py
@@ -70,7 +70,7 @@ def test_post_new_projects_bad_request(client: TestClient, mocker: MockFixture)
     # then
     assert response.status_code == 400
     assert response.headers["content-type"] == "text/html; charset=utf-8"
-    assert b"name: Field required" in response.content
+    assert b"Field required" in response.content
 
 
 def test_post_new_projects(client: TestClient, mocker: MockFixture) -> None: