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

# Validating Data before Onboarding

The following are the best practices for validating data before onboarding:

* All sources need to share the sample files to validate the data coming in with the data discovery sheet.
* All data should be first uploaded into the sandbox environment and tested, before onboarding onto the Production environment. All clients are given one Sandbox environment.