Hi,
To get the daily_betfair_mappings, you need to use a different script to the daily updates for the database.
This is:
/fetch_additional_data.sh
The script and the manual for this data are available in your member access pages once you have subscribed to the database.
You can call it as follows:
/fetch_additional_data.sh daily_betfair_mappings
All the data is made available on the morning of racing by 7 am (before the markets get any real liquidity and after the final declarations and most non-runners have been declared).
You can see exactly when all data in Smartform was loaded (including betfair_daily_mappings) using the loaded_at field.