+ push @errors, t8('Assigned order must be a sales order.') if $self->order_id && 'sales_order' ne $self->order->type;
+ push @errors, t8('Customer of assigned order must match customer.') if $self->order_id && $self->order->customer_id != $self->customer_id;
+ push @errors, t8('Customer of assigned project must match customer.') if $self->project_id && $self->project->customer_id && $self->project->customer_id != $self->customer_id;
+ push @errors, t8('Project of assigned order must match assigned project.')
+ if $self->project_id && $self->order_id && $self->order->globalproject_id && $self->project_id != $self->order->globalproject_id;