API Reference > bentleyjs-core > Ids > Id64 > Id64.getBriefcaseId Id64.getBriefcaseId Function Extract the briefcase Id portion of an Id64String, contained in the upper 24 bits of the 64-bit value. getBriefcaseId(id: string): number Parameter Type Description id string Returns - number Defined in core/bentley/src/Id.ts Line 87 Last Updated: 12 June, 2024