How can I know if the nomination has been submitted and received by the IPCC?

The IPCC Focal Point is able to check all the nominations that have been submitted via the menu item “My Nominations”. This shows all the nominations you have submitted to the IPCC for further consideration. 

As a Focal Point, you can still add new nominations or delete existing nominations before the deadline. There are no limits on the number of nominations that can be submitted per member country.