Current State:

Currently, when you try to add more than 50 attachments to an attachment field in a form, you get the following error:

Proposed Future State:

Increase the number of attachments allowed per form.

Workaround

Don't use the attachment field in the form; instead, add the attachment field to the request type. This allows more than 50 attachments.

Alternatively, users can compress/zip attachments to reduce the number of files.