Erro Code DUPLICATE_TRANSACTION while placing a bet

[David Sutcliffe]

Hello
I am placing the bet through Betfair PlaceBet API of betfair through my android application. For some runner of same Market it returns DUPLICATE_TRANSACTION error code, while for some runner of same market, it gets success. I am plaing bet in a row, like for runner 1 first 2 second after that for runner 3 then 4... like this. SO sometimes it returns success and sometimes it returns DUPLICATE_TRANSACTION error code.
Plese help me out

[betdynamics]

The documentation https://api.developer.betfair.com/se...eportErrorCode may give you a hint.

[David Sutcliffe]

what it means duplicate customer referece data submitted for Duplication_tranaction error code. Can you please little explain it if possible.?
Is this of because i am plaing the bet continously?

[betdynamics]

When you place a bet you have the option to specify a customer reference (see https://api.developer.betfair.com/se...ni/placeOrders)

If the customer reference is the same for two bets then you will get the duplicate transaction error.

If you don't want to specify a customer reference, then I would suggest that you omit the customerRef parameter from your json string.

[David Sutcliffe]

Ok thanks. I am trying now as you suggested.