ibm_brussels and ibm_strasbourg are now retired

ibm_brussels and ibm_strasbourg have been retired and will no longer accept jobs.

This change is part of the continued evolution and expansion of the IBM Quantum® fleet in the EU, including the recently released Nighthawk QPU ibm_berlin and the upgraded Heron r3 QPU ibm_aachen. The global fleet has now fully transitioned away from Eagle, IBM Quantum's first utility‑scale processor family, introduced in 2021.

If your workflows target ibm_brussels or ibm_strasbourg, please migrate to another active QPU to take advantage of the latest hardware. For guidance on retrieving data from past jobs, refer to the documentation.