# duplicate_client_id

> Two ops in one call used the same `clientId`.

**Duplicate clientId** · HTTP 422

## What it means

Two ops in one call used the same `clientId`.

## What to do

Give every created line its own `clientId`.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/duplicate_client_id",
  "title": "Duplicate clientId",
  "status": 422,
  "detail": "Two ops in one call used the same `clientId`.",
  "code": "duplicate_client_id",
  "requestId": "req_…"
}
```

How to read any error: [Errors guide](https://api.bymundi.com/docs/guides/errors.md).