The main purpose doctrine is a court-developed exception to the suretyship provision.

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The main purpose doctrine is indeed a court-developed exception to the suretyship provision requirement that a promise to answer for the debt of another must be in writing to be enforceable. This doctrine applies when the main purpose or leading object of the promisor is to obtain an economic benefit for themselves, thus allowing an oral promise to serve as a surety.

The Main Purpose Doctrine Is a Court-Developed Exception to the Suretyship