When trying to add charges on a pending vendor invoice journal, which contains multiple purchase orders, the option is greyed out, regardless on whether the scenario is part or not, of an intercompany context.

This option is highly needed, as there are situations where, for quantity differences, the acquiring company will need to manage the differences according to the sales invoice, as such to receive a credit note. Having this option available would help speeding up the process, avoiding any user mistakes, not limited too.