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Currently MISO has two provisions in the Tariff for system or software issues that impact the accurate settlement of the Market.

1. The Market Implementation Error (MIE) provision in Module C Section 48.3 provides a mechanism by which MISO can detect, investigate, and correct prices (LMPs) for a period of up to 5 calendar days after posting a notice of a potential correction.
2. The Continuing Error (CE) resettlement language in Module A Section 12A is intended to ensure that impacts of continuing software, system or other execution errors are appropriately adjusted for up to two years going backward from MISO’s formal acknowledgment of an error.

This issue will involve a discussion of the relationship between MIE and CE, with a potential for Tariff clarifications or process improvements.