> ## Documentation Index
> Fetch the complete documentation index at: https://developer.qminder.com/llms.txt
> Use this file to discover all available pages before exploring further.

# InputFieldConstraints

No description

```graphql theme={null}
interface InputFieldConstraints {
  id: String!
}
```

### Fields

#### [<span class="gqlmd-mdx-entity"><code class="gqlmd-mdx-entity-parent">InputFieldConstraints</code>.<code class="gqlmd-mdx-entity-name">id</code></span>](#)<span class="gqlmd-mdx-bullet"> ● </span>[<span class="gqlmd-mdx-entity"><code class="gqlmd-mdx-entity-name">String!</code></span>](/reference/graphql/scalars/string) <mark class="gqlmd-mdx-badge">non-null</mark> <mark class="gqlmd-mdx-badge">scalar</mark>

### Member Of

[`InputField`](/reference/graphql/objects/input-field)  <mark class="gqlmd-mdx-badge">object</mark>

### Implemented By

[`NumericFieldConstraints`](/reference/graphql/objects/numeric-field-constraints)  <mark class="gqlmd-mdx-badge">object</mark>