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What does Unity or Control Expert Build error E1203 usage of multi assignment statements is disabled indicate?

Issue
My EcoStruxure Control Expert or Unity Pro project is using Altivar 930 VFD DTMs and DFBs.
When the project is built, it returns the "E1203 usage of muti assignment statements is disabled" error.

Product line
EcoStruxure Control Expert, Unity Pro, Altivar

Resolution
This indicates that the "Allow multi assignment [a:=b:=c] (ST/LD)" option checkbox must be set.
It can be found in: Tools -> Project Settings -> Program -> Languages -> Common

Tools dropdown > Project Settings
Project Settings > Program > Languages > Common ==> Allow multi assignment checkbox



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