2026-10-11 retrospective record
September 29 catalog identifier cutover — retrospective
The September 29 Production UUID cutover replaced previously published item, variant and collection IDs for affected records across a bounded two-organization population, leaving saved browser baskets and links with references that can now be refused. Recovery uses the matching tenant/environment's current catalog and explicit shopper reselection or removal, preserving unaffected lines, quantities, coupon intent and unresolved checkout/payment evidence; there is no public old-to-new map. This retrospective is not advance notice: the reviewed records did not locate a pre-cutover basket notice, compatibility deadline or published emergency rationale, and the existing API versioning and deprecation policy remains authoritative.