Exceptions

Inconsistent Orders of Magnitude

The system is unsolvable with the existing degrees of magnitude.
This exception is typically raised when the order of magnitude for resources between processes and constraints varies by a large degree, e.g. the mixing of metric grams and metric tons.

Over Constrained

The system is unsolvable under the current constraints.
A common cause of this exception is the absence of a process to either produce or consume a given resource. This is because a tacit constraint of MAT-DP systems is that all resources must sum to 0: everything produced must eventually be consumed.
In the worked 'Three Factories' example from Measure and Objective, the environment process serves to consume the CO2 resource.

Unbounded Solution

The system can reach an infinite objective score under the current constraints.
This error will occur if one or more processes is counted toward the objective function, and they do not have a direct or indirect constraint limiting the number of runs they may fulfil.

Iteration limit reached

Please report this to Dreaming Spires if encountered!