Sage 100

Working with a client running version 2016.4 Advanced. When entering sales orders, they often generate purchase orders from the appropriate button on the Totals tab. They are now having random occurances (once a week) where after they ""OK"" the next PO number, rather than the system creating and displaying the PO created, the system freezes during the creation process and can only be stopped using task manager. Whenever this occurs, the next PO number has been incremented to much larger number (3250 to 7175510). They have multiple order takers and process about 400 orders a week. I can't determine a pattern of customer, item, order type, user, etc. They do have third party products, one of which affects Purchase Order. Of course third parties deny it is them. Sage definitely denies it's them. Anyone ever had this happen? If so, did you ever discover what causes it.?

The higher number looks like a telephone #. Very odd. We had an odd error recently where a user's security permission record was corrupted (SY_UserSecurity file), resulting in system ""hangs"" during certain processes. I Deleted and re-added their user security-role and that solved it.