qiskit/releasenotes/notes/0.15/defective_qubits-d826ccbd04...

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---
features:
- |
Support was added to the :func:`qiskit.compiler.transpile` function for handling backends that have qubits or
gates marked as defective in their :class:`~qiskit.providers.models.BackendProperties`. If a gate or qubit
parameter in the :class:`~qiskit.providers.models.BackendProperties` has an ``operational`` field and it
is set to ``False``, then the :func:`~qiskit.compiler.transpile` function will consider the maximum connected
subgraph of operational qubits as a coupling map and handle the process to avoid using non-operational
qubits/gates.