"ONE GUARANTOR POLICY IS NOW IN EFFECT". The Students' Loan Bureau is configuring its system to facilitate this policy change. While we work to upgrade the system, we ask that you enter the same guarantor information, with the exception of the TRN, in both guarantor fields (Section K of the online application). For the TRN of the second guarantor, replace the first digit with ‘9’. We thank you for your continued patience and understanding.