If an error relates to the extent of the coverage or the effective date of coverage,
an error modification is necessary. The error modification must clearly explain the
nature of the error and request its correction. The State must provide evidence which
establishes an error actually occurred. An example of acceptable evidence is a copy
of the intrastate agreement of coverage between the State and the political entity.
If this is not available, other evidence may include minutes of meetings or statements
by appropriate officials stating the intent at the time Social Security coverage was
requested. In addition, reporting practices must have been consistent with intent.
Generally, an error in an agreement or modification which can be corrected by a subsequent
modification results from a situation where all individuals or agencies concerned
took every action they believed necessary to effectuate the coverage desired, but
through a clerical error, or some similar reason, failed to accomplish the objective.
Corrections are not limited to errors made by the State agency itself as an error
on the part of a political entity may also be corrected.