Error Messages/42526
Error text
The right-hand side of the 'No_plane_reduction' constraint evaluated to a non-numeric value,
«null», at coordinate:
Time = 2015
The optimization being solved was created using DefineOptimization from 'My_NLP'.
Cause
This message occurs when a non-linear optimization is being solved. During this solution process, the solver plugs solution candidates into the decision variables, and evaluates the constraints. For some value that tried, the indicated constraint evaluated to something that contained a non-numeric value, and hence the error. The error provides several important clues to help you pinpoint the problem. It shows what the bad value is («null» in this example), whether it occurred on the left-hand or right-hand side, and what coordinate it occurs at when the left-hand or right-hand side is array-valued.
Remedy
Adjust your model to eliminate the source of the non-numeric value.
If you are using Null to indicate that certain positions in an array-valued constraint are not to be used as constraints, then replace them with a vacuous constraint. An example is this -- instead of the constraint expression:
(if use_it then f(x) else null) = b
use:
(if use_it then f(x) else b) = b
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