Take SP on Lay bet is firing a back bet in play?

[StevenUK]

I have been reversing the ladder on Betangel.

So say I place a back bet at 3.0 (which gets fully matched), then place a lay bet at 2.98 which does not get matched and the race is getting close to starting, so I click 'take SP all', and then when the race starts, even though the lay bet is set to 'take sp' a back bet is getting fired instead at SP, and not the lay bet.

Why is that?

[StevenUK]

All makes sense now

[Dallas]

The lay bet is not being matched and will be getting rejected by Betfair when they match SP bets because the minimum stake allowed for SP lay bets is £10 liability

[StevenUK]

The lay bet is not being matched and will be getting rejected by Betfair when they match SP bets because the minimum stake allowed for SP lay bets is £10 liability

Right, thank you, so if all the trades were £4 (instead of £2), and the SP bet at odds of 4.7, giving a liability of £12.40 for a £4 stake, everything should have worked as I expected? and the trades would have got matched?

[Jukebox]

From Betfair's SP Basics:

Which markets will we offer SP betting on?
To start with, we will only offer SP betting on horseracing markets. Moving forward, we plan to offer the SP option on other sports.
What is the minimum stake for an SP bet?
The minimum stake for a back bet at SP is £2 (or the local currency equivalent). The minimum liability if laying is £10 (or the local currency equivalent).
Is there a maximum stake for SP bets?
No.

[StevenUK]

Thank you, I have just tested it for the minimum liability and it works perfect. You learn something every day.