# FR - Flexible Range — What must pass before the next step: mandated step order in regulated processes

For FR - Flexible Range, process is Importer Security Filing (ISF); jurisdiction is United States (CBP); what must already be done is the ISF must be updated as soon as better information becomes available; deadline is no later than 24 hours prior to arrival, recorded from its source on 2026-08-11.

- **Step:** FR - Flexible Range _(verified: appears in the quote below)_
- **Process:** Importer Security Filing (ISF) _(our reading, not quoted from the source)_
- **Jurisdiction:** United States (CBP) _(our reading, not quoted from the source)_
- **What must already be done:** the ISF must be updated as soon as better information becomes available _(verified: appears in the quote below)_
- **Deadline:** no later than 24 hours prior to arrival _(verified: appears in the quote below)_

## What the source says

> FR - Flexible Range – A range of data for the Manufacturer, and/or Ship To Party, and/or Country of Origin, and/or Commodity HTSUS number has been provided. In these cases, the ISF must be updated as soon as better information becomes available, but in any event no later than 24 hours prior to arrival. If FR is used, CBP will expect a timely update.

## Source

- https://www.cbp.gov/sites/default/files/assets/documents/2018-Nov/Updated%20ISF%20FAQ%20FINAL%2011282018.pdf

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [What must pass before the next step: mandated step order in regulated processes](https://referencesource.org/prerequisite-sequencing-regulated-processes/).