@loopback/docs
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Documentation for LoopBack 4
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lang: en
title: 'API docs: repository.entity.getidproperties'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.repository.entity.getidproperties.html
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[Home](./index.md) > [@loopback/repository](./repository.md) > [Entity](./repository.entity.md) > [getIdProperties](./repository.entity.getidproperties.md)
## Entity.getIdProperties() method
Get the names of identity properties (primary keys).
<b>Signature:</b>
```typescript
static getIdProperties(): string[];
```
<b>Returns:</b>
`string[]`