15-6-26(e). Supplementation of responses. A party who has responded to a request for discovery with a response that was complete when made is under a duty to supplement or correct the response to include information thereafter acquired if ordered by the court or in the following circumstances:

(1) A party is under a duty to supplement at appropriate intervals the party's response to a discovery request authorized under subdivision (a) if the party learns that in some material respect the response is incomplete or incorrect and if the additional or corrective information has not otherwise been made known to the other parties during the discovery process or in writing. With respect to testimony of an expert, the duty extends to information contained in any expert report, discovery response concerning expert's opinions and any deposition of the expert.

(2) A party is under a duty seasonably to amend a prior response to an interrogatory, request for production, or request for admission if the party learns that the response is in some material respect incomplete or incorrect and if the additional or corrective information has not otherwise been made known to the other parties during the discovery process or in writing.

(3) A duty to supplement responses may be imposed by order of the court, agreement of the parties, or at any time prior to trial through new requests for supplementation of prior responses.Source: Supreme Court Rule 76-3, § 2; SL 2006, ch 290 (Supreme Court Rule 06-16), eff. July 1, 2006.