A more thorough explanation:

Definition: A memorandum in error is a document that claims there is a mistake in a previous document. It is usually accompanied by an affidavit, which is a written statement made under oath, to prove the mistake.

Example: Let's say that a company filed a report with the wrong numbers. They could file a memorandum in error to correct the mistake and provide evidence to support their claim.

Another example: A student might file a memorandum in error if they believe their grade was recorded incorrectly. They would need to provide evidence, such as a copy of their graded assignment or exam, to support their claim.

These examples illustrate how a memorandum in error is used to correct mistakes in official documents or records. It is important to provide evidence to support the claim of an error.