Hi Paul,
Are you using Excel to send the bets?
Unfortunately it is a very general error messages received from Betfair. It simply means that one of the orders failed (or an order within a batch of orders failed).
The last time a user reported that problem, it turned out to be a problem at Betfair. Here is the discussion:
ERROR_IN_ORDERThere were also some other discussions about this error.
The following discussion looks at whether the problem was caused by a country being block, or the market being momentarily suspended when the bet was sent:
topic1220.htmlThe following discussion indicates the problem may have been solved for one user by switching to polling:
topic1890-20.htmlThe following discussion also mentioned insufficient funds or market suspensions as possible causes:
topic1983.htmlKind regards,
Gavin