---
title: "Reconfigure Salesforce external client app after sandbox refresh"
slug: "reconfigure-salesforce-external-client-app-after-sandbox-refresh"
description: "How to reconfigure the Salesforce connection after a sandbox refresh."
tags: ["Admin", "Advanced", "Best Practices", "Configuration", "IT", "Salesforce Integration", "Troublehsooting"]
updated: 2026-08-13T21:10:41Z
published: 2026-08-13T21:10:41Z
canonical: "support.fullcast.com/reconfigure-salesforce-external-client-app-after-sandbox-refresh"
stale: true
---

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

# Reconfigure Salesforce external client app after sandbox refresh

A Salesforce sandbox refresh will impact your Fullcast connection and settings. After the refresh, you'll need to manually reconfigure the application to ensure it works correctly.

## Reconfigure the Salesforce connection

1. [Check the tenant ID in custom metadata](/v1/docs/adding-a-fullcast-tenant-id-to-salesforce-custom-metadata)—in Salesforce setup, navigate to **Custom Metadata Settings > Fullcast Setting** and check the Tenant ID.
2. Recreate the external client app and reconnect Fullcast—a sandbox refresh can invalidate the external client app and its Fullcast connection. Follow [Create the external client app in Salesforce](https://support.fullcast.com/docs/en/migrate-from-connected-app-to-external-client-app#create-the-external-client-app-in-salesforce) onward in [Migrate from connected app to external client app](https://support.fullcast.com/docs/en/migrate-from-connected-app-to-external-client-app) to recreate the app (if it didn't carry over from the refresh) and reconnect Fullcast to it.
3. [Import a job](/v1/docs/import-jobs)—run a full import job to confirm the connection is successful and update the data in Fullcast.

Once this is complete, you can resume sandbox work, such as testing routing policies.