Modeling ordered phases with more then 1 interstitial sublattice about opencalphad HOT 2 CLOSED

I have no idea how TC works today, I have not seen the code for 10 years although I think the error message you got is something I wrote more than 10 years ago.
This error you get is when you try to enter a disordered fraction set. There is no need to have a disordered fraction set to model ordering although it may be useful.
In principle there is no problem having two or more additional sublattices which are not included in the ordering but as it is rare it may not work even with OC. My proposal is that you try to model the ordering without using the disordered fraction set. I
If you have further questions using OC please email me directly

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You can easily find my email on internet

from opencalphad.