Is there a way to customize fields in Sales Invoice. I would like to set field Update Stock to be checked by default and make it read only?
You can do it from the Custimize form of the Sales Invoice.
If you don’t create a delivery note, you can check the “Update Stock” option, and it will work fine. However, if you create the delivery note and check the “Update Stock” option, an error will occur.
Might be your browser or internet connectivity.
I dont think its a connectivity issue as other screens load correctly. Could it be anything to do with security?
Reload page and again check it.