import json
from ahserver.serverenv import ServerEnv
env = ServerEnv()
delete_func = getattr(env, 'delete_supply_contract_items', None)
if delete_func is None:
    print(json.dumps({"status": "error", "message": "delete_supply_contract_items function not found"}))
else:
    result = await delete_func(request, params_kw)
    print(result)