> ## 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.

# Partially Update a Donor

> Updates only the donor fields you send.

Send just the fields you want changed — for example `lastName` or `notes` — and the rest stay as they are. This is the endpoint to use when you do not have the whole donor record on hand. Returns the updated donor.


## API Specification

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