diff --git a/modules/core/nuxeo-core-api/src/main/java/org/nuxeo/ecm/core/api/impl/SimpleDocumentModel.java b/modules/core/nuxeo-core-api/src/main/java/org/nuxeo/ecm/core/api/impl/SimpleDocumentModel.java
index b7e5a8722098..774e1e0b793f 100644
--- a/modules/core/nuxeo-core-api/src/main/java/org/nuxeo/ecm/core/api/impl/SimpleDocumentModel.java
+++ b/modules/core/nuxeo-core-api/src/main/java/org/nuxeo/ecm/core/api/impl/SimpleDocumentModel.java
@@ -20,6 +20,7 @@
  */
 package org.nuxeo.ecm.core.api.impl;
 
+import static javax.servlet.http.HttpServletResponse.SC_BAD_REQUEST;
 import static org.nuxeo.ecm.core.schema.types.ComplexTypeImpl.canonicalXPath;
 
 import java.io.Serializable;
@@ -41,6 +42,7 @@
 import org.nuxeo.ecm.core.api.DocumentRef;
 import org.nuxeo.ecm.core.api.LifeCycleConstants;
 import org.nuxeo.ecm.core.api.Lock;
+import org.nuxeo.ecm.core.api.NuxeoException;
 import org.nuxeo.ecm.core.api.NuxeoPrincipal;
 import org.nuxeo.ecm.core.api.PathRef;
 import org.nuxeo.ecm.core.api.PropertyException;
@@ -115,6 +117,9 @@ protected SimpleDocumentModel(DocumentType documentType) {
     public static SimpleDocumentModel ofType(String type) {
         SchemaManager service = Framework.getService(SchemaManager.class);
         DocumentType dType = service.getDocumentType(type);
+        if (dType == null) {
+            throw new NuxeoException("Type: " + type + " does not exist", SC_BAD_REQUEST);
+        }
         return new SimpleDocumentModel(dType);
     }
 
diff --git a/modules/core/nuxeo-core-test/src/test/java/org/nuxeo/ecm/core/api/TestSimpleDocumentModel.java b/modules/core/nuxeo-core-test/src/test/java/org/nuxeo/ecm/core/api/TestSimpleDocumentModel.java
index 8272359375fa..edca2c41546f 100644
--- a/modules/core/nuxeo-core-test/src/test/java/org/nuxeo/ecm/core/api/TestSimpleDocumentModel.java
+++ b/modules/core/nuxeo-core-test/src/test/java/org/nuxeo/ecm/core/api/TestSimpleDocumentModel.java
@@ -18,8 +18,10 @@
  */
 package org.nuxeo.ecm.core.api;
 
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -115,4 +117,17 @@ public void testPropertyUpdatedWithSameValueAreDirty7() throws Exception {
         assertTrue(doc.getProperty("dc:title").isDirty());
     }
 
+    // NXP-30052
+    @Test
+    public void testNonExistingType() {
+        try {
+            SimpleDocumentModel.ofType("Foo");
+            fail("Should have raised a NuxeoException");
+        } catch (NuxeoException e) {
+            assertEquals(400, e.getStatusCode());
+            assertEquals("Type: Foo does not exist", e.getMessage());
+        }
+
+    }
+
 }
diff --git a/modules/platform/rest-api/nuxeo-rest-api-test/src/test/java/org/nuxeo/ecm/restapi/test/DocumentBrowsingTest.java b/modules/platform/rest-api/nuxeo-rest-api-test/src/test/java/org/nuxeo/ecm/restapi/test/DocumentBrowsingTest.java
index 44f0db2d9f80..aa33ad79d20c 100644
--- a/modules/platform/rest-api/nuxeo-rest-api-test/src/test/java/org/nuxeo/ecm/restapi/test/DocumentBrowsingTest.java
+++ b/modules/platform/rest-api/nuxeo-rest-api-test/src/test/java/org/nuxeo/ecm/restapi/test/DocumentBrowsingTest.java
@@ -628,6 +628,22 @@ public void iCanCreateADocumentWithNonExistingField() {
         }
     }
 
+    // NXP-30052
+    @Test
+    public void iCantCreateADocumentWithNonExistingType() throws IOException {
+        DocumentModel folder = RestServerInit.getFolder(0, session);
+
+        String data = "{\"entity-type\": \"document\",\"type\": \"Foo\",\"name\":\"newName\",\"properties\": {\"dc:title\":\"Foo\"}}";
+
+        try (CloseableClientResponse response = getResponse(RequestType.POST, "path" + folder.getPathAsString(),
+                data)) {
+            assertEquals(Response.Status.BAD_REQUEST.getStatusCode(), response.getStatus());
+            JsonNode node = mapper.readTree(response.getEntityInputStream());
+            assertEquals(400, node.get("status").longValue());
+            assertEquals("Type: Foo does not exist", node.get("message").textValue());
+        }
+    }
+
     @Test
     public void iCanDeleteADocument() {
         // Given a document