I took a unit of equipment maintenance, and now the settlement people let me open the VAT invoice, how do I open it?

You can, as if your company intentionally make it difficult for you, or perhaps your company's financial system provides that you can not use cash to settle. The payment for goods can be settled in cash or in bank deposits. This and the ticket is not much to do with, just like we go to the supermarket to buy things, you can pay cash can also swipe the same card to see if your financial reimbursement system has provisions, if the company stipulates that you can not pay cash, then you can only to the supplier to get the money back.