I use this configuration:

<ComboBoxListItemPicker listId='<LIST_ID>' columnInternalName='Author/Title' // Aquí especificas el campo de persona keyColumnInternalName='ID' webUrl='<WEB_URL>' defaultSelectedItems={[]} onSelectedItem={(items: any) => { console.log(items); }} className='myComboBoxListItemPicker' placeholder="Select an item" />

But the query that launches the control is this:

/_api/web/lists('xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/items?$select=ID,Author/Title&$filter=&$top=100

And get error 400, because $expand is missing.

Any idea?

Thanks.

I tried add $expand in filter property but not working

<ComboBoxListItemPicker listId='<LIST_ID>' columnInternalName='Author/Title' // Aquí especificas el campo de persona keyColumnInternalName='ID' webUrl='<WEB_URL>' filter="&$expand=Author" defaultSelectedItems={[]} onSelectedItem={(items: any) => { console.log(items); }} className='myComboBoxListItemPicker' placeholder="Select an item" />

recovers the records but does not display them in the combo field Author/Title