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:
unclosed 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 integration (frequent or parallel requests)
limit concurrent operations on the same data
Recommendation:
use the server with the autoUpgrade setting enabled (helps prevent similar issues)