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

# Create a Contact Reference

> Links a contact to its record in an external system by storing a referenceSource and referenceId pair on it. Once set, you can look the contact up with the Get a Contact by Reference Source endpoint and de-duplicate imports against it.



## API Specification

The full API specification for this endpoint is available in the [documentation index](https://docs.virtuous.org/llms.txt).