NiagaraSystemHistoryImport defines the “system tags” text patterns used to import remote Niagara histories from the target NiagaraStation, in addition to local import parameters, including collection (“pull”) times, current status, local history Id, and config overrides. Along with NiagaraHistoryImport descriptors, NiagaraSystem HistoryImport descriptors reside under the History extension of a NiagaraStation in the NiagaraNetwork. However, SystemHistoryImport descriptors utilize “System Tags” properties of remote history extensions, instead of unique history IDs.

For more details, see Niagara History Import properties and Using System Tags to import Niagara histories.