diff --git a/src/binding/c/c_api.cc b/src/binding/c/c_api.cc
index 56453862..2c3489ab 100644
--- a/src/binding/c/c_api.cc
+++ b/src/binding/c/c_api.cc
@@ -4307,37 +4307,6 @@ size_t zvec_doc_memory_usage(const zvec_doc_t *doc) {
       return doc_ptr->memory_usage();)
 }
 
-zvec_error_code_t zvec_doc_validate_and_sanitize(zvec_doc_t *doc,
-                                const zvec_collection_schema_t *schema,
-                                bool is_update, char **error_msg) {
-  if (!doc || !schema) {
-    set_last_error("Document or schema pointer is null");
-    return ZVEC_ERROR_INVALID_ARGUMENT;
-  }
-
-  ZVEC_TRY_RETURN_ERROR(
-      "Failed to validate document",
-      std::shared_ptr<zvec::CollectionSchema> schema_ptr = nullptr;
-      auto status =
-          convert_zvec_collection_schema_to_internal(schema, schema_ptr);
-      if (!status.ok()) {
-        if (error_msg) {
-          *error_msg = copy_string(status.message());
-        }
-        return status_to_error_code(status);
-      }
-
-      auto doc_ptr = reinterpret_cast<zvec::Doc *>(doc);
-      status = doc_ptr->validate_and_sanitize(schema_ptr, is_update); if (!status.ok()) {
-        if (error_msg) {
-          *error_msg = copy_string(status.message());
-        }
-        return status_to_error_code(status);
-      }
-
-      if (error_msg) { *error_msg = nullptr; }
-      return ZVEC_OK;)
-}
 
 zvec_error_code_t zvec_doc_to_detail_string(const zvec_doc_t *doc, char **detail_str) {
   if (!doc || !detail_str) {
diff --git a/src/include/zvec/c_api.h b/src/include/zvec/c_api.h
index cbb174e9..c64190d5 100644
--- a/src/include/zvec/c_api.h
+++ b/src/include/zvec/c_api.h
@@ -3035,18 +3035,6 @@ ZVEC_EXPORT void ZVEC_CALL zvec_doc_merge(zvec_doc_t *doc,
  */
 ZVEC_EXPORT size_t ZVEC_CALL zvec_doc_memory_usage(const zvec_doc_t *doc);
 
-/**
- * @brief Validate document against Schema
- *
- * @param doc Document object pointer
- * @param schema Schema object pointer
- * @param is_update Whether it's an update operation
- * @param[out] error_msg Error message (needs manual release)
- * @return zvec_error_code_t Error code
- */
-ZVEC_EXPORT zvec_error_code_t ZVEC_CALL zvec_doc_validate_and_sanitize(
-    zvec_doc_t *doc, const zvec_collection_schema_t *schema, bool is_update,
-    char **error_msg);
 
 /**
  * @brief Get detailed string representation of document
diff --git a/tests/c/c_api_test.c b/tests/c/c_api_test.c
index 4955dce9..4f38d691 100644
--- a/tests/c/c_api_test.c
+++ b/tests/c/c_api_test.c
@@ -4783,14 +4783,6 @@ void test_doc_advanced_functions(void) {
   zvec_doc_add_field_by_value(val_doc, "test_field", ZVEC_DATA_TYPE_INT32,
                               &(int32_t){42}, sizeof(int32_t));
 
-  char *error_msg = NULL;
-  zvec_error_code_t err =
-      zvec_doc_validate_and_sanitize(val_doc, schema, false, &error_msg);
-  TEST_ASSERT(err == ZVEC_OK);
-  if (error_msg) {
-    zvec_free(error_msg);
-  }
-
   zvec_doc_destroy(val_doc);
   zvec_collection_schema_destroy(schema);
   zvec_doc_destroy(doc);
@@ -4804,7 +4796,7 @@ void test_doc_advanced_functions(void) {
                               "hello", 5);
 
   char *detail_str = NULL;
-  err = zvec_doc_to_detail_string(detail_doc, &detail_str);
+  zvec_error_code_t err = zvec_doc_to_detail_string(detail_doc, &detail_str);
   TEST_ASSERT(err == ZVEC_OK);
   TEST_ASSERT(detail_str != NULL);
   // printf("  Document detail: %s\n", detail_str);