Hi Doreen.
To start off with I would like to thank you for the response.
I have gone through the Audit trail for a couple of the affected invoices and can for no history of any intervention between the initial issue date and the date that these were rectified.
This did only affect about 7 invoices. The concern was one of these was for $13k. All affected invoices we created GST inclusive. There were no instances of a Ex GST invoice being affected. All invoices affected were open.
We can also found no pattern - i.e. specific time period, customer, account etc. to isolate the probable cause.
At this point in time we are just going to put this down to a random "glitch". We have not seen the issue reoccur and we will continue to monitor closely. Should this occur again we will go a little deeper to investigate the cause.
Again, Thank you for the response.
Regards
Frank