@loopback/docs/site/apidocs/repository.isinvalidrelationerror.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: repository.isinvalidrelationerror'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.repository.isinvalidrelationerror.html
---

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[Home](./index.md) &gt; [@loopback/repository](./repository.md) &gt; [isInvalidRelationError](./repository.isinvalidrelationerror.md)

## isInvalidRelationError() function

<b>Signature:</b>

```typescript
export declare function isInvalidRelationError(e: any): e is InvalidRelationError<any>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  e | <code>any</code> |  |

<b>Returns:</b>

`e is InvalidRelationError<any>`