Non-reliance (Item 4.02)
Also called restatement.
A company's conclusion that financial statements it already issued should no longer be relied on because of an error.
It's reported on an 8-K under Item 4.02, naming the periods affected and briefly describing the facts. The conclusion can come from the board, a board committee, the company's officers or its auditor. Source 1 Source 2
Issuing corrected financial statements is called a restatement.