- $form->isblank("invdate", $locale->text('Invoice Date missing!'));
- $form->isblank("vendor", $locale->text('Vendor missing!'));
+ $form->isblank("invdate", $locale->text('Invoice Date missing!'));
+ $form->isblank("vendor", $locale->text('Vendor missing!'));
+ $form->isblank("invnumber", $locale->text('Invnumber missing!'));