3144:data is encrypted to unknown ID

Hi

While trying to decrypt a file received from a client I am getting the error  “Private key not found” .

1080:no private key could be found for decryption.

I have done the following as mentioned by the user dfinkelstein in another post.

C:\Users\Administrator>pgp --list-keys
Alg     Type      Size/Type     Flags      Key ID      User ID
-----     ----         ---------          -------       ----------      -------

1) My first question is from the above output which column displays prviate keys, and public keys.

I have also run the following

C:\Users\Administrator>pgp --verify "F:\esco\New folder\test.pgp"

and I get the following output.

file.pgp:verify (3144:data is encrypted to unknown ID 0x73345F23)