If the value is wrong. We should made a credit for that invoice and them send de new one.
You can either issue a credit note for the difference, or a credit note for the full original invoice amount together with a new invoice for the revised amount.
I'm guessing the original invoice was 'too low' and the OP is concerned that it might not be possible to increase it after it has been sent.
Do your invoices state 'E&OE'?
This could be important if you wish to increase the amount.
Hello . . . . . anybody there?
I had responded but have instead decided to take a sabbatical until Sift get their act together and sort out the spammers. Some say they find them amusing. Personally, they just p155 me off.
“I may be gone some time”
I'm sure this must have been discussed before, but I missed it. Would membership by paid subscription weed them out?
Sorry, OP, we've gone off your topic - but then it didn't belong in this forum anyway.
Maybe just the inability to post for 24 hours after joining would help.
Say ‘hi’ to Oates if you see him.
If your question is about how to increase an amount charged on an invoice (rather that how to reduce it) it is a legal question, not one for accountants.