if (count($failed_item) > 0)
    {
           display_error(_("The issue cannot be processed because it would cause negative inventory balance for marked items as of document date or later."));
        return false;
    }

** Inside the IF statement i validate against the count() of the array instead just direct value.

Hope this helps.

    $failed_item = $_SESSION['issue_items']->check_qoh($_POST['Location'], $_POST['date_'], !$_POST['IssueType']);
    if ($failed_item != -1) 
    {
           display_error(_("The issue cannot be processed because it would cause negative inventory balance for marked items as of document date or later."));
        return false;
    }

Try to comment out the above lines and see how it proceeds.

@joe: any variable scope and visibility issues?

The "id" field instead of the "component" field was being compared till now for "update_bom()" function!

I installed Front a few weeks ago and I have some problems issuing additional items to work orders.
I have plenty stock in hand but everytime I want to add items the system returns me the message: "The issue cannot be processed because it would cause negative inventory balance for marked items as of document date or later."

I have also noticed that when I place a Purchase Order that has not been received, I can see the amount to be received in the column "On Order" of the option Inventory Item Status, which I consider normal; but when I create a Work Order, once it has been issued but not yet closed, the required quantities appear in the same column. Therefore, it is impossible to me to separate goods that are to be received, from requirements of Work Orders.

Any ideas?

Thanks in advance,

Max