You are reading the documentation for SDK v2, which is no longer the latest version. Switch to current
UserProvidedIdentifiers
export type UserProvidedIdentifiers = {
__typename?: 'UserProvidedIdentifiers';
key?: Maybe<Scalars['String']>;
orderNumber?: Maybe<Scalars['String']>;
customerNumber?: Maybe<Scalars['String']>;
externalId?: Maybe<Scalars['String']>;
sku?: Maybe<Scalars['String']>;
slug?: Maybe<Scalars['String']>;
slugAllLocales?: Maybe<Array<LocalizedString>>;
};