Hi Alex,
Exchange: I am not actually sure, I will see if I can find out.
FX spot:
there’s a deposit account that holds USD/EUR/GBP/etc - you can see these referenced as Current account O-XXXXXX.001.00.USD/Ordinary and O-XXXXXX.001.00.GBP/Ordinary in these examples. The spot is shifting between those. Purchases for a security then comes out of the relevant currency balance.
Forward: I think was essentially a spot trade as the forward open/closed within 24 hours, again shifting the cash balances between currencies.
Cash withdrawal: This is withdrawing from the deposit account, in this case the GBP denominated one.
Hope that helps. Definitely not the end of the world if these can’t be supported though!