diff --git a/src/langchain_google_spanner/vector_store.py b/src/langchain_google_spanner/vector_store.py
index b5084e80..4be49a05 100644
--- a/src/langchain_google_spanner/vector_store.py
+++ b/src/langchain_google_spanner/vector_store.py
@@ -672,6 +672,13 @@ def add_texts(
 
         embeds = self._embedding_service.embed_documents(texts_list)
 
+        if len(embeds) != number_of_records:
+            raise ValueError(
+                "Number of embeddings should equal the number of documents."
+                "Try reducing the batch size when adding the documents."
+                f" Expected: {number_of_records}, but found {len(embeds)}"
+            )
+
         if metadatas is None:
             metadatas = [{} for _ in texts]