How is the invoice checked?

I agree with all answers. They add every important points .

according to accounting point of view 

vendor name, date, qty, weight and Amount etc. if all these things are right than we can say that the invoice is checked

I fully agree with previous answers. I can only add that sometimes it is better to check the bank account of the vendor in our database (e.g. imitation of invoices sent by telecommunication company)

Check the description of work performed to be sure it reflects what was completed. Some vendors might invoice you for work that has not yet been completed. Even worse, you might find listed on one invoice work that was paid for from a different invoice.

Check with the project manager or department head to be sure the work was completed satisfactorily. If a vendor has botched an assignment, it is advisable to withhold payment until the work has been brought up to standard.

Look at the dates that appear in line items on the invoice. Check those dates against dates of past invoices in another effort to guard against being billed for the same work twice.

Look at the name, address and Tax ID number of the vendor to be sure it matches your contractor paperwork. If any of the information does not match, contact the vendor for an explanation. Any vendor name or address change is crucial data. An unrecognizable tax ID number may be a typo or reflect a change in vendor ownership. But there is always the chance that the vendor is involved in financial shenanigans. While it may not be your responsibility to take action in such an instance, it is best to be forewarned.

I would like to answer this question from auditors perspective, In that case we will have to carry out checking at three levels :

1.Test of details: Which will include:

a) Invoice Date

b) Invoice Number/Ref No.

c) Seller details

d) Description of goods

e) Amount (Including checking of various calculations)

2. Test of Controls: Which will include :

a) Whether proper quality control procedures being applied by QC dept.

b) Whether proper authority has been exercised in placing order.

c) Whether tender was properly issued and various bids evaluated in line with companies policy.

d) Whether items received are in agreement with the purchase order.

3. Analytical procedures: Which will include:

a) Check rates in previous invoices from same as well as different supplier.

b) Check the invoices raised for same period in previous year to find any substantial increase or decrease in purchases.

 purchased

1. Invoice date
2. Billing items specific to work. Or is it a personal 
3. Lack of manual adjustments on the invoice
4. Discount . The total
5. Items prices
6. Seller's stamp. And signed

 / Seller

1. Date
2. The number of units and unit price
3. Discount . Quantity . monetary
4. The recipient's signature
5. Copies of the invoice. And the lack of manual modifications

1.Check the Invoice belongs to the Company.

2. Check Date.

3.Check Previous Price of the same item.

4.Check the Order Sheet of the Invoice.

5. Check the recipient signature.

Invoices are checked as follows:-

1. Invoices must include the items in the purchase order (not exceeding as mentioned in purchase order), delivery notes, (material inspection certificate and  work inspection certificate where ever required).

Steps to take while checking Invoice:

1. Invoice Date

2. Invoice Number

3. Description

4. Department / project manager approval

5. Name, Address and Payment Details.