The new SSM for web is great if you do standard AutoCAD-based workflows with the DST hosted on ACC. Several wizards in Civil 3D interact with the DST file. Currently, these tools edit only a local file (on a network drive or through a desktop connector). The SSM4Web dialog works directly on the DST in the cloud.
When using ACC projects, the problem is the wizards edit the DST in the local cache which causes problems when other folks are also working on the DST with the SSSM4web UI because of how each is editing the file. Ultimately, this creates issues with the DST and could corrupt the file.
The request... Make all Civil 3D tools/functions/etc that interact with the DST cloud-based operations. I would guess this would require those wizards, etc. to become cloud-based much like SSM4Web.
I want to give Robert Soyars (aka @Cadguru42 ) credit for bringing this to my attention).
https://forums.autodesk.com/t5/acc-general-discussion-forum/sheet-set-manager-times-out-causing-issu...
https://forums.autodesk.com/t5/civil-3d-forum/c3d-2025-event-viewer-error-quot-sheet-number-could-no...