Update problem with financial fields

[joebordes]

the fixes in the script are not to fix your issue, it is another issue they are attending. Your problem is that there is a missing column in vtiger_inventoryproductrel. My comment above:

I would say that you simply add the tax4 column to vtiger_inventoryproductrel but this is incorrect and you have not been able to save that tax for any invoice, so walk with care....