Can somebody explain taking SP all...as if I'm an idiot

[Crumpets]

After trading for years, i still can't quite get to grips with taking SP All, and the connotations etc.
Would somebody kindly explain it to me, in the context of it not triggering.

Scouring the forum I keep reading about the lay liability of £10, or the back liability of £2 for the pot. But what does this specifically mean? I understand you either qualify for the pot or you don't, but how is this liability calculated?

Is this referencing entry orders? Exit orders? Total entry position, or each individual entry position treated separately? Total exit order liability, or the liability of each individual closing order?

Example...
To qualify for the £10 liability pot, would a £10 back entry stake at 3s qualify me? Alternatively, would five sets of £2 back entries disqualify me etc?
Would it matter if my closing orders were across a spread of ticks? 5 sets of £2 lays at 2.86, instead of just a £10 exiting lay order at 2.86

[ShaunWhite]

For a bet to get reconciled at SP....
Back bets = £2 stake min
Lay bets = £10 liability min

What you did before doesn't matter, it's just about the individual unmatched bets and their stakes. Eg 2x £1 back bets would be rejected.

[weemac]

One penny back bets are accepted at BFSP if you select 'Take SP'.

[Crumpets]

Thanks Shaun

So if i understand this correctly...

£20 back position opened at 3s. £20 closing lay order placed at 2.86.
Order gets matched at SP as 20 x 1.86 = 37.2 (comfortably over £10 liability)

But if the closing lay orders were divided into ten chunks of £2 across ten ticks, none of those orders would get matched at SP. As individually, 2 x 1.86 = 3.72 (below £10 liability)

[Simone]

Sounds like you’ve got the gist of it. Betfair looks at each unmatched lay bet on its own at the off, so if you chop a bigger lay into lots of tiny pieces under £10 liability they just lapse instead of going to SP. A single £20 lay with enough liability will convert fine, and with back bets it’s a £2 minimum stake unless you’ve opted to take SP specifically as weemac mentions. If you want to make sure your exit goes to SP just keep it as one order that meets the limit.

[Crazyskier]

with back bets it’s a £2 minimum stake unless you’ve opted to take SP specifically as weemac mentions. If you want to make sure your exit goes to SP just keep it as one order that meets the limit.

Was SP back bets not reduced to £1 when the minimum was reduced from £2 to £1? Seems rather odd if not...

CS