What does "The amount does not include some of your funds" mean?

The notification "The amount does not include some of your funds" may be displayed for several reasons:
1. The balance of a given token has not been loaded.
2. If you added a custom token through a smart contract address and the price of that token is unknown to us. Since the conversion rate of this custom token is unknown to us, this asset cannot be used to calculate the total balance.