OrderSend() Error 10013 - Invalid request - page 2

[Local User]

The solution to this problem is the position property of the request structure. Unfortunately, the use of position in the reference book is not described in sufficient detail, but in practice we were able to establish the following: you need the position property when closing and modifying, where the modifier is explicitly specified. If you open a new position after closing, you must specify position=0; otherwise, the robot will attempt to close or modify the position with the old value in this field, which generates the "Invalid Request" error.