Error executing code: Overflow in internal run stack.

Hello,

One of my customer reported that this message Error Message (11:33:22 am) Error executing code: Overflow in internal run stack very frequently but not always when scrolling or browsing the Sales Order. After doing some checking, it seems that the Sales Order form has been customized previously to include the line number in the Sales Order Line. That line number is shown on the form but not save in the database. Suspect that the error prompt when refreshing as there are coding added to refresh the data. I have try to simulate this issue. Sometimes it does not trigger the error above at all but sometimes it does trigger the message above. Therefore, it is really difficult to simulate the actual cause for this.

Does anyone know what actually that will cause the above message and how to solve this? Please advice.

Thank you