Check AR parameters -> Updates tab -> Safety level of invoiced orders (keep locked for not deleting after invoice)
What do you mean "SalesFormLetter has not been updated".
Do you have amount in the sales order.
Check AR parameters -> Updates tab -> Safety level of invoiced orders (keep locked for not deleting after invoice)
What do you mean "SalesFormLetter has not been updated".
Do you have amount in the sales order.