To be cleared from CRB, you are required to pay the outstanding loan and any other fines that the loan attracted. You are also required pay CRB processing fee to a credit reference bureau company for your name to be cleared from CRB list.
Therefore, if you took a loan from a financial institution or mpesa loan, you are only required to be cleared once for each loan you took. If you took several loans from the same company then you are required to cleared for each loan.
Clearance fee varies depending on the credit reference bureau company in question.
Learn how to be cleared from CRB in Kenya.