Empty message in situations involving Workflow Tasks with precondition but no predecessor

Document ID : KB000087847
Last Modified Date : 14/04/2018
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Error Message :
U00001680 ??? ""

A message is missing. It should describe situations involving a Workflow Task without a predecessor (which is possible but serves little purpose) but still has a precondition.

The Task prevents processing and the following message is provided as status: U00001680 ??? "". It should say: "Checking Preconditions".

Note that the behavior of the Workflow itself is correct. The BLOCK status cannot be solved: The Task is waiting for a predecessor that does not exist.
Cause type:
Root Cause: The message text for return code 1860 was never included
Update to a fix version listed below or a newer version if available.

NOTE: the fix does not contain a solution for the fact that the task will stay in blocked status forever, it just adds the error message.

Fix Status: Released

Fix Version(s):
Component(s): AE Server and Initialdata

Automation Engine 12.0.1 - Available
Additional Information:
Workaround :