Hi,

I want to develop a flexible job shop scheduling using OPL (not CP). 
When I run the model, it doesn't work and shows many errors. Can you please help me find what am I doing wrong here? Please have a look in the model and any possible solutions would be a great help for me. Thank you!!!
My problem given below:

my model is attached as flexiblejobshop.mod
Data file is flexiblejobshop.dat

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nurcan.a
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#DecisionOptimization

CPLEX understands linear constraints and certain quadratic constraints (second order cones). You have cubic expressions in constraints 5 and 6, which OPL cannot extract into a CPLEX model because CPLEX does not have any provision for cubics. You need to linearize those constraints (and also the quadratic portion of constraint 7).
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Paul Rubin
Professor Emeritus
Michigan State University
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