When using `acli pull` after implementing a custom VCL you may receive an error like the following when trying to import your database into your Cloud IDE:
Unable to download database copy from /environments/XXXXXX-XXXXXX-XXXXX-XXXXXX-XXXXXX-XXXXXX/databases/SITENAME/backups/XXXXXX/actions/download. 404: Not Found
If your application utilizes a custom VCL please contact Acquia Support to assist in updating the ACL list in your VCL which will then allow you to download backups into your IDE using acli.
This is due to a known issue we have documented here: https://docs.acquia.com/cloud-platform/known-issues/#unable-to-perform-database-backups-following-the-vcl-access-list-update