For a deeper look into our Eikon Data API, look into:
Overview | Quickstart | Documentation | Downloads | Tutorials | Articles
What do we need to do to get access to: data/pricing/beta3/snapshots
We have access to other endpoints without an issue.
Attachments: Up to 2 attachments (including images) can be used with a maximum of 512.0 KiB each and 1.0 MiB total.
You will need to reach out to your account manager to request this service. Based on your initial requirements, you were likely given access to a select list of endpoints, but not everyone.