# How to update an invoice to correct VAT?

**URL:** https://discuss.tryton.org/t/how-to-update-an-invoice-to-correct-vat/773
**Category:** User
**Tags:** sales
**Created:** [September 29, 2018, 4:12pm UTC](https://discuss.tryton.org/t/how-to-update-an-invoice-to-correct-vat/773 "2018-09-29T16:12:31Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![jcm](https://discuss-cdn.tryton.org/user_avatar/discuss.tryton.org/jcm/32/344_2.png) [@jcm](https://discuss.tryton.org/u/jcm)
#### Post date: [September 29, 2018, 4:12pm UTC](https://discuss.tryton.org/t/how-to-update-an-invoice-to-correct-vat/773/1 "2018-09-29T16:12:31Z")

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Hi,

Using 4.6 and account\_fr. When a Party has an incorrect VAT rule set, it seems impossible to correct the autogenerated vat message on the invoice once the sale is saved. For instance, for a sale outside EU from France, if the VAT rule was incorrectly set to “EU sale”, once the sale is validated, the invoice cannot be corrected even after the Party is saved with the VAT rule “Outside EU”.

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### Author: ![ced](https://discuss-cdn.tryton.org/user_avatar/discuss.tryton.org/ced/32/1237_2.png) [@ced](https://discuss.tryton.org/u/ced)
#### Post date: [September 29, 2018, 6:04pm UTC](https://discuss.tryton.org/t/how-to-update-an-invoice-to-correct-vat/773/2 "2018-09-29T18:04:03Z")

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You have to change the taxes on the invoice lines.