Static VARA attribute "Key not found: Error" fails to display

Document ID : KB000087498
Last Modified Date : 14/04/2018
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Error Message :

The Attribute: "Key not found: Error" is not working.

No Error is thrown in cases where a key is missing.
OS Version: N/A
Cause type:
Root Cause: The attribute NO-FOUND=Error had no effect if it is set for a variable with type static. The initial value has been returned.
Update to a fix version listed below or a newer version if available.

Fix Status: Released

Fix Version(s):
Automation Engine 12.0.2 - Available
Automation Engine 11.2.4 - Available
Additional Information:
Workaround :
Use KEY as a way to check if one exists
:set &key# = GET_VAR(VARA.TDA.,"three","KEY")

before accessing the VARA.