# INTERNAL_NAME_CONFLICT: Internal name already in use

> Another entry in the same type family on this ref (the type, its parent, or its subtypes) already has that internal name (`_name`). For a type, another type has it.

Sent by the management API (400). The page: https://coho-cms.com/errors/internal-name-conflict/

## What to do

Give the entry a different internal name.

## The response

```json
{
  "code": "INTERNAL_NAME_CONFLICT",
  "type": "https://coho-cms.com/errors/internal-name-conflict",
  "title": "Internal name already in use",
  "status": 400,
  "detail": "What went wrong in this request, in a sentence.",
  "instance": "/v1/projects/…"
}
```

Every error code: https://coho-cms.com/errors/