It is a trainers responsibility to process a stable return when horses arrive or leave. This process isn't policed to the requirements of a stable return, hence why you can't rely on any data from any department in NZ Racing. Stable return requires at least 3 days prior to nominations, but a lot of trainers get this process done when nominating for a trial or race. To make the trainers follow the process policy rules is not accepting a nomination from late stable returns. Then the trainers number of horses in their stables will start becoming accurate. You would be amazed at how many trainers would still have retired or deceased horses in their trading lists.