An X12 / 271 message shows "Completed" on the BO. However, it did not reach its destination. I searched for more information on what the error means but, couldn't find much. See error enclosed below. Any idea what it means and how to fix it?

More info...

• The IOLog Record shows in the Output Data an error... "An error occurred with the web application. It has been logged to system error log (System Operation > System Logs > Application Error Log)."
• The EDI response shows the same message... "An error occurred with the web application...." 
• I re-sent the message from the BO and it went out successfully and reached its destination. 

Error logged in the Application Error Log: 

Hello,

Is there a single ObjectScript operator or method to concatenate two %DynamicArrays?

I'm looking for something that will do the following:

set arr1 = [ 1, 2, 3 ]
set arr2 = [ 4, 5, 6 ]
set arrcombined = arr1.%Concatenate(arr2)

or 

set arrcombined arr1_arr2

With end result:

zw arrcombined
arr1=[1,2,3,4,5,6]  ; <DYNAMIC ARRAY>

I can iterate and %Pop over the 2nd array and %Push each popped entry to the 1st array, but I was looking for something more succinct.

Thanks in advance.