Value for field "Account" (...) is not valid

Good afternoon everybody,

when trying to validate or post a supplier invoice, I get this error message.

Bildschirmfoto von 2020-08-09 14-29-43

Can somebody with magic long-distance diagnosis abilities tell me what I’m doing wrong? With customers’ invoices, the problem does not occur…


Good afternoon herrdeh,
The account of the movement is closed:


Hello Alnus, thank you for your attention - and welcome to the club.
Your idea sounds very much plausible, unluckily none of the two relevant accounts are closed. Where else could the problem be?


The error message is clear that the problem is one account used is closed.
Maybe you did not check the right accounts or you forgot that other accounts are involved like the tax account.