Specifications include, but are not limited to: Successful Proposer(s) agrees to accept for collection, all unpaid accounts that CSN may choose to refer to the Successful Proposer(s) for collection. The number and origin of these accounts and the means by which Successful Proposer(s) shall receive the accounts shall be determined solely by, and may be altered at the discretion of the CSN. These may include but not be limited to: National Direct Student Loans (NDSL) Federal Perkins Loan accounts Nursing Student Loan accounts (NSL) Health Profession Student Loan accounts (HPSL) Institutional Loans and Tuition Receivable Accounts Student Housing and Meal Plan accounts Other Institutional Receivable Accounts Successful Proposer(s) is expected to acknowledge the receipt of all accounts referred to them for collection. Successful Proposer(s) is expected to transmit this acknowledgment, in writing, to CSN no later than seven (7) calendar days after accounts are referred.