> ## 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.

# Set Primary Donor Contact Method

> Makes a contact method the donor's primary email address or phone number.

Which of the two it becomes depends on the contact method's type. `isPrimary` is cleared on the one that held it before.


## API Specification

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