Primary obligations to pay a debt must be in writing to be enforceable.

Primary obligations to pay a debt are not within the statute of frauds and,therefore,need not be in writing to be enforceable.Secondary obligations,however,are within the statute of frauds and need to be in writing.A secondary obligation arises when a party outside a primary agreement promises to fulfill one of the original party's (the primary debtor's)obligations if the original party (the primary debtor)fails to fulfill his or her obligation.