Module Chart Checks : (C6015) Elements containing comparisons of unions: (not supported in Code Generation)

(C6015) Elements containing comparisons of unions: (not supported in Code Generation)

Error In:
Completeness
Description:
Elements contain comparisons of two union data-items. The comparisons of two unions is ambiguous because the result depends on which field of the unions is the current field in each element.
Erroneous Elements:
Actions, conditions, and events