Principal Investigators and PD's must use My NCBI's "My Bibliography" tool to manage their professional bibliographies (as of July 23, 2010, see the full notice here)
If you receive an error message when trying to link accounts you may have linked too many accounts already! You will need to contact NCBI directly to have them manually link your eRA Commons account with your current My NCBI account.
Include in your email the following:
Note you do not need to send any passwords.