did not receive business number?

[2nirsv]

Hi there,
I applied for a federal corporation and also for an provincial ontario corp. I received certificate of incorporation and ontario corp number but did not get any business number and the certificate still says not available ?

Should I apply for this BN separately?

I need to get BN to open bank accts and related items..not sure how to get this done now?

Any advice is appreciated.

Thanks.