VMware Aria Automation Service Broker has а content source of Type "Extensibility actions" for a certain project which contains actions, but the "Number of items" show that fewer actions are synced than the total number. For example, 5/10 will be shown, and a red exclamation mark next to it. This means that not all actions are synced in the content source and the problematic ones will not be available for use in the Catalog.
A change has been introduced in early versions of VMware Aria Automation (around 8.2, or even earlier) for which actions created before that version will not be possible to be used as a content source. This is due to a bug introduced in that version.
Older actions, which are created before the bug was introduced will not be accessible as a content source and a Catalog item will not be possible to be created from them.
This issue is resolved in VMware Aria Automation 8.13.1 available at Broadcom Product downloads.
Error downloading catalog item '/actions/<ACTION_ID>_<PROJECT_ID>' (Error: Content provider error).
https://<ARIA_AUTOMATION_HOSTNAME>/automation-ui/extensibility-ui;ash=%2Factions%2Flist%2Fedit%3Bid%3D<ACTION_ID>%3BprojectId%3D<PROJECT_ID>
For each of the problematic actions:
Older actions, which are created before the bug was introduced will again be accessible as a content source and a Catalog item will be possible to be created from them.