[rules-users] Web decision tables (Guvnor)

Hi folks, Given a decision table a bit like this (hopefully the monospaced font lays it out ok!): Account Currency CanTrade 1 EUR Y 1 USD Y 1 IDR Y 1 Otherwise N 2 EUR Y 2 USD Y 2 Otherwise N LHS conditions are generated a bit like this: account == 1, currency == 'EUR' account == 1, currency == 'USD' account == 1, currency == 'IDR' account == 1, currency not in ('EUR', 'USD', 'IDR') account == 2, currency == 'EUR' account == 2, currency == 'USD' account == 2, currency not in ('EUR', 'USD', 'IDR') … which has the effect that for account 2, currency IDR, the rule does not fire. For the business analysts building the rules, this does't make a lot of sense, as they're expecting it to mean: account == 2, currency not in ('EUR', 'USD') Unfortunately this means that if a currency is permitted for one account, then a row must be added for every other account, indicating that the currency is not permitted. I'm trying to achieve a sensible default (fire the rule to reject the trade) unless the currency is explicitly permitted. Is there a decent mechanism for achieving this in a decision table? One alternative I can think of is to create a technical rule which logically inserts a rejection which exists as long as this rule hash't fired. But I would really prefer to avoid doing anything like that, as I reckon it would be something of a maintenance nightmare. Any thoughts? Cheers, Steve