---
title: "ID"

doc_type: static
doc_category: static
doc_version: v20270301
source_url:
  html: 'https://developer.shopline.com/zh-hans-cn/docs/storefront-api/common/scalars/id'
  md: 'https://developer.shopline.com/zh-hans-cn/docs/storefront-api/common/scalars/id.md'
---
# ID

The ID scalar type represents a unique identifier, often used to refetch an object or as key for a cache. The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When expected as an input type, any string (such as "4") or integer (such as 4) input value will be accepted as an ID.