---
title: "Schedule Build History"
slug: "schedule-build-history"
updated: 2024-01-30T13:56:28Z
published: 2024-01-30T13:56:28Z
canonical: "kb.dataparc.com/schedule-build-history"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.dataparc.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Schedule Build History

[Build History](/v1/docs/build-history) is used to backfill calculated tags. This is useful to populate the history of a new tag or to recover data missed during an outage. Schedule Build History performs this task at a specified time.

![](https://cdn.document360.io/59db2ca4-e512-446a-a143-a7c626447812/Images/Documentation/image048_006.png)

**Start Date & Time:** The date and time to start the backfill.

**End Date & Time:** The date and time to end the backfill.

**Now:** Use the current time as the End Date & Time.

**Allow Write to Past:** If checked, data will be directly written to history. If unchecked, a data file will be generated that must be imported with the Calcs Convert Importer.

**Write File to:** The file path where the temporary history data is written.

**Backfill Grid**

**Select:** The box in the first column selects the group for backfill.

**Group Name:** The name of the group to backfill.

**Instance Number:** The PARCcalc Server instance that this calc group normally runs on.

**Backfill Start:** The start time of the last backfill.

**Backfill End:** The end time of the last backfill.

**Select All:** Selects all groups.

**Build History:** Builds a history from the selected groups.

**Open Importer:** Opens the Calcs Convert window or importing the temporary history files into history.

**Cancel:** Closes the window.