Can't Be Completed as Dialed?

This message can have several reasons (listed in most common order): The number being called has the wrong format (missing number, etc.). The number is not known / number is no longer in use. The number cannot be reached (out of reach of network or switched off phone).

What does it mean number Cannot be completed as dialed?

The message means exactly what it says. Something about what you are dialing is wrong. Either you've got an incorrect number, or it requires more to dial (such as 11 digit dialing for long-distance, or 10 digit dialing if there is a new area code but still considered local, etc.).

What does it mean when Verizon says your call Cannot be completed as dialed?

If a customer has their phone switched OFF or they are in an area with no network coverage, then the “your call cannot be completed as dialed please try again later” automated message will be heard when trying to call them. ... You can always place a call across to the carrier to investigate this.