Previously, when this is done, it returned the "Bet ID" and "Size Cancelled" for each individual bet. However, it appears the code has changed and this is no longer returned.
This is the result I have now {"jsonrpc":"2.0","result":{"status":"SUCCESS","marketId":"1.113423327","instructionReports":[]},"id":1}
Can someone please confirm this is the case, as I would need to change my coding. FYI, It will be good to know "the total amount" that is cancelled when I execute such an instruction.