Background:
From the beginning of IFS Cloud (in Aurena ) , there were concerns of not being able to upload multiple document files into the Attachment section of a single Business Object. Having understood the requirements around the user experience, a fix has been delivered to all IFS Cloud tracks except 21R1 version.
RnD Solution:
The possibility to call “Create Documents” was brought back when standing on an Attachment section of a business object. “Create Documents” page supports to Drag/Drop or Select single or multiple files and crate document accordingly attaching to the respective business object. This is handled by adjusting the Document Default Value for “ATTACH_CREATE_NEW_FORM” in the Document Management Basic Data setting.
( Document Management > Basic Data > Document Default Values > ATTACH_CREATE_NEW_FORM)

NOTE: It is still possible to set either “Create Documents” for multiple uploads or “Create Document Assistant” for a single upload as it was existed previously.
When the above is set for “Create Documents”, it will open the Create Documents page that supports uploading multiple files, upon clicking the [New Document] command in the Attachments section.

This will sort out the main concerns had by the document management users for uploading and attaching multiple files in an single attempt on a single business object.
However we have a known limitation too. The Create Documents page does not use the IFS Aurena Agent today, (& will not use it after the fix either.) Therefore, ability to execute macros or check in view copies will not still be possible in this flow.