This release includes the following changes to the Exchange Stream API
• Ladder levels
o Available levels will increase from 6 to 10 (either side)
o Default (if MarketDataFilter.setLadderLevels ) is not set will shift to 10
o If you do not specify ladder levels then please test that you are not impacted by the increased depth on our integration server (stream-api-integration.betfair.com)
• Ladder roll-up
o Roll-up (/ minimum size) will decrease from £2 to £1
o Please test that your applications do not assume a £2 roll-up
Betfair Developer Program