API Reference > bentleyjs-core > Ids > Id64 > Id64.isTransient Id64.isTransient Function Determine if the supplied id string represents a transient Id. isTransient(id: string): boolean note This method assumes the input is a well-formed Id string. see Id64.isTransientId64 see TransientIdSequence Parameter Type Description id string A well-formed Id string. Returns - boolean true if the Id represents a transient Id. Defined in core/bentley/src/Id.ts Line 426 Last Updated: 11 June, 2024