diff --git a/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenByteKnnVectorQuery.java b/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenByteKnnVectorQuery.java
index ef0a3028209..93258611603 100644
--- a/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenByteKnnVectorQuery.java
+++ b/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenByteKnnVectorQuery.java
@@ -136,6 +136,7 @@ public class DiversifyingChildrenByteKnnVectorQuery extends KnnByteVectorQuery {
       int visitedLimit,
       KnnCollectorManager knnCollectorManager)
       throws IOException {
+    ByteVectorValues.checkField(context.reader(), field);
     KnnCollector collector = knnCollectorManager.newCollector(visitedLimit, context);
     if (collector == null) {
       return NO_RESULTS;
diff --git a/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenFloatKnnVectorQuery.java b/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenFloatKnnVectorQuery.java
index 75a4a1a62ae..17b5aaa295f 100644
--- a/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenFloatKnnVectorQuery.java
+++ b/lucene/join/src/java/org/apache/lucene/search/join/DiversifyingChildrenFloatKnnVectorQuery.java
@@ -136,6 +136,7 @@ public class DiversifyingChildrenFloatKnnVectorQuery extends KnnFloatVectorQuery
       int visitedLimit,
       KnnCollectorManager knnCollectorManager)
       throws IOException {
+    FloatVectorValues.checkField(context.reader(), field);
     KnnCollector collector = knnCollectorManager.newCollector(visitedLimit, context);
     if (collector == null) {
       return NO_RESULTS;
diff --git a/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinByteKnnVectorQuery.java b/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinByteKnnVectorQuery.java
index 5b70763d044..6f773300a6d 100644
--- a/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinByteKnnVectorQuery.java
+++ b/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinByteKnnVectorQuery.java
@@ -17,16 +17,21 @@
 
 package org.apache.lucene.search.join;
 
+import static org.apache.lucene.index.VectorSimilarityFunction.COSINE;
+
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field;
 import org.apache.lucene.document.KnnByteVectorField;
 import org.apache.lucene.index.DirectoryReader;
 import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.index.Term;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.IndexWriterConfig;
 import org.apache.lucene.index.VectorSimilarityFunction;
 import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.Query;
-import org.apache.lucene.search.TermQuery;
 import org.apache.lucene.store.Directory;
 
 public class TestParentBlockJoinByteKnnVectorQuery extends ParentBlockJoinKnnVectorQueryTestCase {
@@ -54,16 +59,25 @@ public class TestParentBlockJoinByteKnnVectorQuery extends ParentBlockJoinKnnVec
   }
 
   public void testVectorEncodingMismatch() throws IOException {
-    try (Directory indexStore =
-            getIndexStore("field", new float[] {0, 1}, new float[] {1, 2}, new float[] {0, 0});
-        IndexReader reader = DirectoryReader.open(indexStore)) {
-      IndexSearcher searcher = newSearcher(reader);
-      Query filter = new TermQuery(new Term("other", "value"));
-      BitSetProducer parentFilter = parentFilter(reader);
-      Query kvq =
-          new DiversifyingChildrenFloatKnnVectorQuery(
-              "field", new float[] {1, 2}, filter, 2, parentFilter);
-      assertThrows(IllegalStateException.class, () -> searcher.search(kvq, 3));
+    try (Directory d = newDirectory()) {
+      try (IndexWriter w =
+          new IndexWriter(
+              d, new IndexWriterConfig().setMergePolicy(newMergePolicy(random(), false)))) {
+        List<Document> toAdd = new ArrayList<>();
+        Document doc = new Document();
+        doc.add(getKnnVectorField("field", new float[] {1, 1}, COSINE));
+        toAdd.add(doc);
+        toAdd.add(makeParent(new int[] {1}));
+        w.addDocuments(toAdd);
+      }
+      try (IndexReader reader = DirectoryReader.open(d)) {
+        IndexSearcher searcher = newSearcher(reader);
+        BitSetProducer parentFilter = parentFilter(reader);
+        Query kvq =
+            new DiversifyingChildrenFloatKnnVectorQuery(
+                "field", new float[] {1, 2}, null, 2, parentFilter);
+        assertThrows(IllegalStateException.class, () -> searcher.search(kvq, 3));
+      }
     }
   }
 
diff --git a/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinFloatKnnVectorQuery.java b/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinFloatKnnVectorQuery.java
index fee519a1e1d..616c8fdb370 100644
--- a/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinFloatKnnVectorQuery.java
+++ b/lucene/join/src/test/org/apache/lucene/search/join/TestParentBlockJoinFloatKnnVectorQuery.java
@@ -29,11 +29,9 @@ import org.apache.lucene.index.DirectoryReader;
 import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.IndexWriter;
 import org.apache.lucene.index.IndexWriterConfig;
-import org.apache.lucene.index.Term;
 import org.apache.lucene.index.VectorSimilarityFunction;
 import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.Query;
-import org.apache.lucene.search.TermQuery;
 import org.apache.lucene.store.Directory;
 
 public class TestParentBlockJoinFloatKnnVectorQuery extends ParentBlockJoinKnnVectorQueryTestCase {
@@ -50,16 +48,25 @@ public class TestParentBlockJoinFloatKnnVectorQuery extends ParentBlockJoinKnnVe
   }
 
   public void testVectorEncodingMismatch() throws IOException {
-    try (Directory indexStore =
-            getIndexStore("field", new float[] {0, 1}, new float[] {1, 2}, new float[] {0, 0});
-        IndexReader reader = DirectoryReader.open(indexStore)) {
-      IndexSearcher searcher = newSearcher(reader);
-      Query filter = new TermQuery(new Term("other", "value"));
-      BitSetProducer parentFilter = parentFilter(reader);
-      Query kvq =
-          new DiversifyingChildrenByteKnnVectorQuery(
-              "field", new byte[] {1, 2}, filter, 2, parentFilter);
-      assertThrows(IllegalStateException.class, () -> searcher.search(kvq, 3));
+    try (Directory d = newDirectory()) {
+      try (IndexWriter w =
+          new IndexWriter(
+              d, new IndexWriterConfig().setMergePolicy(newMergePolicy(random(), false)))) {
+        List<Document> toAdd = new ArrayList<>();
+        Document doc = new Document();
+        doc.add(getKnnVectorField("field", new float[] {1, 1}, COSINE));
+        toAdd.add(doc);
+        toAdd.add(makeParent(new int[] {1}));
+        w.addDocuments(toAdd);
+      }
+      try (IndexReader reader = DirectoryReader.open(d)) {
+        IndexSearcher searcher = newSearcher(reader);
+        BitSetProducer parentFilter = parentFilter(reader);
+        Query kvq =
+            new DiversifyingChildrenByteKnnVectorQuery(
+                "field", new byte[] {1, 2}, null, 2, parentFilter);
+        assertThrows(IllegalStateException.class, () -> searcher.search(kvq, 3));
+      }
     }
   }