When doing direct debit through sage and go cardless. What happens is for the month i go into sage customer and request direct debit. Now i highlight the 30 transactions for the month. Request DD. It now does 30 separte transactions for the customer for the month. So that will come out of there account as 30 transactions instead of one singe bulk transactions for the month.
It's weird that when paying by BACS multiple invoices are merged together into a single payment to suppliers, but the opposite of collecting multiple invoices in a single receipt isn't/can't be done.
There were comments about this years ago Go Cardless collecting multiple payments