thx. could be that I was not very clear.
the trigger is simple and does what it should do: it places a lay-sp-bet with a fixed liability of 100 some minutes before the off. that you can do without any problem, by the trigger or manually. I dont have any limit price. so, no problem to place a lay-sp-bet.
what I want to know is why then I have many error-messages in the trigger-log. of course, its not important as the trigger works perfectly. but it remains: why I have the errror-messages?