2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34868It is shown that in spite of a generally accepted concept, there exist nondiffeomorphic solutions to the Cauchy problem in nonempty spacetime, which implies the necessity for canonical complementary conditions. It is nonlocal quantum jumps that provide a canonical global structure of spacetime manifold and, by the same token, the canonical complementary conditions.13 pages, LATEX 2eGeneral Relativity and Quantum CosmologyQuantum Physicstext