Error when trying to obtain a certificate: The specified item could not be found in the keychain

Question

I was having a problem with codesigning my apps, so I deleted all the keys from the keychain. Then I went to Certificate Assistant => Request a certificate from a Certif

Answer 1

Choosing the private key in keychain will occur the problem. "the specified item could not be found in the keychain" While you choose the public key solve it. "Your certificate request has been created on disk."