diff --git a/wwwroot/api/product_category_create.dspy b/wwwroot/api/product_category_create.dspy
index cceb746..283f7c7 100644
--- a/wwwroot/api/product_category_create.dspy
+++ b/wwwroot/api/product_category_create.dspy
@@ -32,6 +32,17 @@ try:
         data['product_type'] = ''
         data['product_type_title'] = ''
 
+    # Ensure all table fields have values, filter out unknown fields
+    all_fields = ['id', 'parent_id', 'name', 'description', 'has_product', 
+                  'product_type', 'product_type_title', 'sort_order', 'icon', 
+                  'status', 'org_id', 'created_by', 'created_at', 'updated_at']
+    fields = {}
+    for k in all_fields:
+        if k in data:
+            fields[k] = data[k] if data[k] is not None else ''
+        else:
+            fields[k] = ''
+
     async with DBPools().sqlorContext(dbname) as sor:
         await sor.C('product_category', data)
         _new_rows = await sor.sqlExe("SELECT * FROM product_category WHERE id = ${id}$", {'id': data['id']})