"different servicer" means that someone or something else is responsible for performing a particular service or task instead of the usual person or entity. Full definition
This tool will allow you to sync each and every one of your student loans from different servicers and put them all in one place (getoutofdebt.com)
Loan consolidation helps borrowers who have multiple loans, some of which may have varying interest rates and even different servicers. (studentloans.net)
If students borrow for each and every semester of their college career, they can end up with a handful of various loans through different servicers upon graduation. (cheapscholar.org)