We ran into a subtle issue with the En-ROADS model and the latest SDE where sde would fail in the case where a subscripted variable is only partially defined in the mdl file. For example: Constant ...

In cases where one uses a ring with variable names which are letters, and another with variables names which are indexed variables (using the same letters), then we get warnings such as the following.

Abstract: The conventional axiomatic definitions are given for multiple assignment to simple variables and for assignment to a single subscripted variable, along with examples to illustrate their use.

SE 42 Left subscripted complex, depending on the type declaration of the array (which is known to the translator). Depending on the outcome of the indexing process, SE38 creates one of the three left ...