Missing sale on 1099-B

[Ghelanih]

I received 1099-B from broker. One of my sale (long term gain) is not reported in 1099-B. 
can I just file my tax based on my 1099-b provided by brokerage? And not varied about paying tax on missing entry in 1099-b

[JohnW152]

No, you’ll need to include the transaction for your long-term gain, even if it’s not reported on your Form 1099-B.

[Mike9241]

and you should find out why it's not reported before filing your return. contact your broker.