---
url: /errors/duplicate_instrument_in_allocation.md
---
# `DUPLICATE_INSTRUMENT_IN_ALLOCATION`

`DUPLICATE_INSTRUMENT_IN_ALLOCATION`

## Description

The same instrument appears more than once in a premium allocation.

## HTTP Status

`422 Unprocessable Entity`

## `doc_url` Format

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

## Typical Cause

Multiple allocation legs use the same `instrumentId`.

## Example

```json
{
  "errors": [{
    "code": "DUPLICATE_INSTRUMENT_IN_ALLOCATION",
    "message": "Instrument … was found at least twice in the same premium allocation",
    "doc_url": "https://docs.example.com/errors/duplicate_instrument_in_allocation"
  }]
}
```

## How To Fix

Merge duplicate legs into one leg per instrument.