This article applies only to on-premise (server / local) installations of ABRA Flexi.
This error means that a lock on a database table could not be obtained. Typically, the table is already being used by another process.
Most common causes:
terminated or "hanging" connections on the server
concurrent operations on the same data (e.g. API calls)
long-running transactions
How to resolve the issue:
restart ABRA Flexi Server
if the issue recurs:
check your API connections (frequent or parallel requests)
limit concurrent operations on the same data
Recommendation:
use a server configured with autoUpgrade (helps prevent similar issues)