(1) A suretyship takes effect only where the intention to provide it is indicated in writing, affixing the surety's name and seal thereon or signed by the surety; provided, the intention to provide suretyship indicated in an electronic form has no effect.
(2) Paragraph (1) shall also apply where a surety obligation is changed disadvantageously to a surety.
(3) Where a surety has fulfilled his or her surety obligation, the invalidation of the suretyship shall not be asserted to the extent of such fulfillment due to any defect in the methods prescribed in paragraphs (1) and (2).[This Article Added on Feb. 3, 2015]