Setting Queue item status from robot

While the bot is running, we try to set the status of items in the queue.
According to the logs, we change the status to AE. However, in Orchestrator QueueItem is still InProgress. What could it be related to this problem appeared in the 15-minute window. Later and earlier attempts to set the status ended successfully.
I looked through all available logs: Orchestrator, Bot, webservices and system and found nothing there about errors.
Has anyone encountered a similar problem?