Refer to the Exhibit. A large corporation manufactures beds in different colors. The inventory file consists of three record types, a header, a detail, and bed color. The record type is the first…

The restart attribute on the detail record defines the recovery boundary: when an error occurs in a subordinate color record, the engine discards the remainder of that detail record's children (all remaining color records) and restarts parsing at the next occurrence of the detail record, which exactly satisfies the requirement to ignore all color records under an invalid detail group.

Setting restart on the color record itself would only cause the engine to skip to the next individual color record, not abandon all color records under the current detail record, failing to satisfy the all-or-nothing requirement.

Placing restart on the header record would cause the engine to skip the entire header and all subordinate detail and color records upon any color error, discarding far more data than intended.

There is no standalone restart function within the map itself; restart is an attribute applied to a specific group component in the type tree to define the error-recovery scope.