Warehouse alerts not popping up.

hi experts.

i have created warehouse alerts based on queries for a client. The alerts are set to be triggered when new sales orders are added in SAP at the counter when a customer comes to buy. The alerts are also set to pop up in warehouse computers installed with SAP. There are six different warehouses. The alerts management is set on a frequency of 1 minute and three recipients are selected to receive the alerts by internal message. One of the recipients is the manager/creator of the alerts. These settings are standard for all warehouse alerts.

PROBLEM: The alerts work fine but the following day when new sales orders are created, the alerts fail to pop up in the warehouses. So far, we've been dealing with this problem by recreating the alerts which then work fine for the rest of the day. I need a permanent solution to this problem.

As a side note, i've also been getting an error message at the bottom of the screen reading...'Another user-modified table [Alerts Template]. Am not sure how this error relates to my problem because it randomly appears but does not stop any transaction processing or any action at the time.

Regards,

David Gitare.