E-CE0013 — OMMX rejected the built instance

Error Type

Compile Error

Phase

compiling the problem into an OMMX instance

Python exception

jijmodeling.CompileError

Message

Failed to build the OMMX instance: {...}

Cause

The compiled model was handed to OMMX, but OMMX refused to build the final instance. At this stage OMMX validates structural invariants over compiler-assigned IDs — for example undefined or inconsistent variable/constraint IDs, or misuse of fixed or dependent variables — so this error usually indicates an internal issue in JijModeling rather than a problem in your model. Invalid numeric coefficients such as NaN or infinity are reported earlier as E-TE0509.

Fix

Check the quoted OMMX error for the specific inconsistency. If the error persists, please report it at the JijModeling community with the full error output and, if possible, the model that produced it.