What can I check if content can't be added to or updated in Alfresco Content Services via Alfresco Share or another application? - What can I check if content can't be added to or updated in Alfresco Content Services via Alfresco Share or another application? - Alfresco - Alfresco Sync Service - Alfresco/Alfresco-Sync-Service/3.0/Alfresco-Sync-Service/Alfresco-Sync-Service/Administer/Sync-Service-Admin-FAQs/What-can-I-check-if-content-can-t-be-added-to-or-updated-in-Alfresco-Content-Services-via-Alfresco-Share-or-another-application - 3.0

To fix this issue, check if ActiveMQ is running and available to the repository. See Prerequisites for more. A feature of the Sync Service is to provide resilience of the service, and ensuring that no critical event information is lost.

The recommendation is to run an ActiveMQ cluster to ensure high availability.