diff --git a/CRM/Core/DAO.php b/CRM/Core/DAO.php
index 6cb84d25e28e..290676183aa1 100644
--- a/CRM/Core/DAO.php
+++ b/CRM/Core/DAO.php
@@ -81,6 +81,10 @@ class CRM_Core_DAO extends DB_DataObject {
     QUERY_FORMAT_WILDCARD = 1,
     QUERY_FORMAT_NO_QUOTES = 2,
 
+    /**
+     * No serialization.
+     */
+    SERIALIZE_NONE = 0,
     /**
      * Serialized string separated by and bookended with VALUE_SEPARATOR
      */
diff --git a/CRM/Core/SelectValues.php b/CRM/Core/SelectValues.php
index 31254a4dc73f..c591954617d4 100644
--- a/CRM/Core/SelectValues.php
+++ b/CRM/Core/SelectValues.php
@@ -1136,6 +1136,7 @@ public static function getComponentSelectValues() {
    */
   public static function fieldSerialization() {
     return [
+      CRM_Core_DAO::SERIALIZE_NONE => 'none',
       CRM_Core_DAO::SERIALIZE_SEPARATOR_BOOKEND => 'separator_bookend',
       CRM_Core_DAO::SERIALIZE_SEPARATOR_TRIMMED => 'separator_trimmed',
       CRM_Core_DAO::SERIALIZE_JSON => 'json',
diff --git a/tests/phpunit/CRM/Core/DAOTest.php b/tests/phpunit/CRM/Core/DAOTest.php
index f5b871cc7fc3..5786a146de38 100644
--- a/tests/phpunit/CRM/Core/DAOTest.php
+++ b/tests/phpunit/CRM/Core/DAOTest.php
@@ -407,6 +407,9 @@ public function serializationMethods() {
     ];
     $daoInfo = new ReflectionClass('CRM_Core_DAO');
     foreach ($daoInfo->getConstants() as $constant => $val) {
+      if ($constant === 'SERIALIZE_NONE') {
+        continue;
+      }
       if ($constant === 'SERIALIZE_JSON' || $constant === 'SERIALIZE_PHP') {
         $constants[] = [$val, array_merge($simpleData, $complexData)];
       }
diff --git a/tests/phpunit/api/v3/CustomFieldTest.php b/tests/phpunit/api/v3/CustomFieldTest.php
index 88e4ef20c7ff..7ea591384a16 100644
--- a/tests/phpunit/api/v3/CustomFieldTest.php
+++ b/tests/phpunit/api/v3/CustomFieldTest.php
@@ -73,10 +73,10 @@ public function testCustomFieldCreateWithEdit() {
     ];
 
     $customField = $this->callAPIAndDocument('custom_field', 'create', $params, __FUNCTION__, __FILE__);
-    $params['id'] = $customField['id'];
-    $customField = $this->callAPISuccess('custom_field', 'create', $params);
+    $customField['label'] = 'Name2';
+    $customFieldEdited = $this->callAPISuccess('custom_field', 'create', $customField);
 
-    $this->assertNotNull($customField['id']);
+    $this->assertNotNull($customFieldEdited['id']);
   }
 
   /**