qiskit/releasenotes/notes/0.22/upgrade_rzx_builder_skip_di...

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---
upgrade:
- |
:class:`.RZXCalibrationBuilder` and :class:`.RZXCalibrationBuilderNoEcho`
have been upgraded to skip stretching CX gates implemented by
non-echoed cross resonance (ECR) sequence to avoid termination of the pass
with unexpected errors.
These passes take new argument ``verbose`` that controls whether the passes
warn when this occurs. If ``verbose=True`` is set, pass raises user warning
when it enconters non-ECR sequence.
deprecations:
- |
The unused argument ``qubit_channel_mapping`` in the
:class:`.RZXCalibrationBuilder` and :class:`.RZXCalibrationBuilderNoEcho`
transpiler passes have been deprecated and will be removed in a future
release. This argument is no longer used and has no effect on the
operation of the passes.