It’s important that salespeople work together to help each other through blockages, and also that they keep each other accountable so that no one drops the ball for an extended period.
You should organize a weekly meeting for all Account Managers. The focus should shift each week between 2 topics:
If you need to constantly remind someone to enter the data correctly or follow up on a Sale, a great way to get them to remember that it causes you pain is to ask your staff to help you reduce your admin work to help track it and keep them accountable.