---
url: /errors/transfer_amount_required.md
---
# `TRANSFER_AMOUNT_REQUIRED`

## Description

The transfer request does not include `amount` for a source under mandate.

## HTTP Status

`400 Bad Request`

## `doc_url` Format

`<docs-base-url>/errors/transfer_amount_required`

## Typical Cause

The request omits `amount` for a source under mandate.

## How To Fix

Supply the total in `amount`. The system calculates each instrument amount from the actual holdings.
To move the full balance, supply an amount equal to the current total valuation.