What can I do if I do not have a Reference Number /Co-sign Code for the particular application?
You should contact the IDR applicant, who should have received an email containing the Reference Number/Co-sign Code. The IDR applicant can also access this information by logging into StudentAid.gov and clicking on the relevant link
What exactly do I need to complete my role as a co-signer within the FSA?
Initially, you will need to be logged in with your own personal FSA ID in order to co-sign the applicant's IDR request