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As usage increased, we started seeing more UNABLE_TO_LOCK_ROW errors. These rarely occurred earlier but are now fairly common during updates and integrations. The logic hasn’t changed much. I want to understand why locking becomes more frequent over time.
Record locking is driven by concurrency. As more users, Flows, triggers, and integrations update the same records, the chance of collisions increases. Parent-child relationships make this worse because updating children can lock parents.
Salesforce enforces strict locking to maintain data consistency. When multiple transactions attempt to update the same record simultaneously, one must fail.
Reducing lock contention usually involves redesigning update patterns, batching changes, and avoiding unnecessary parent updates.
Takeaway: Locking issues reflect concurrency pressure, not broken logic.