The issue mentioned here:
viewtopic.php?f=65&t=47906&p=66515&_dc=930
and claimed in that article will be resolved in 2.7.1 still remains in 2.7.2. I cannot modify an existing stoploss or takeprofit in a demo account without getting the error:
Your order has been rejected due to validation failure. Invalid order

What you are referring to is the JForex-API version used in JForex-SDK.
Go to Help -> About... to check the current JForex-API version of the JForex platform.

Don't understand
The Jforex non sdk version is 2.7 - same issue

In a Netbeans environment with version 2.7.2 - same issue
What am I missing here

We cannot reproduce this issue with examples from the post you refer to, please provide precise reproduction steps.

no steps
simply open a position manually
create a new strategy and add the following to onstart

try
{
List<IOrder> existingOrders = engine.getOrders();
for (IOrder order: existingOrders)
{
order.setTakeProfitPrice(1.2565);
}
}
catch (Exception Ex) {}

here's what happens. if the position does not have a takeprofit set - works fine
however after the takeprofit is set once, regardless of which number is entered above, the following is returned:

Your order has been rejected due to validation failure. Invalid order

Do you mean manually creating an order in JForex platform? In that case you're nevertheless using JForex-API 2.7 which does not contain the bugfix.
Do you launch the strategy from the JForex platform or from JForex SDK?

The above was launced with JForex platform

However I have done the same with the SDK using the newly realeased 2.7.2 - and the same issue remains

Please provide:

• The example strategy which replicates the issue.
• The program which launches the strategy in the JForex-SDK.
• Reproduction steps which don't include usage of JForex platform since it uses JForex-API 2.7.

My apologies. we are good to go.
I had updated only the JForex-API-2.7.2. jar. Seems like it required other dependancies. When I created a new project based on the new SDK, all worked fine.
Thanks again for your excellent support