What this file should establish
Identify missing books, schedules, invoices and ownership records. Ask who reconstructs the file, what alternatives are acceptable and how uncertainty is documented. A fixed fee does not guarantee that incomplete inputs support a conclusion.
Identify the years, issues, original records and follow-up responsibilities.
A situation to work through
A proposal covers one federal amendment but not related state work.
For this situation, start with original returns. Identify the period and legal owner before combining it with the other records. Keep the original source and explain any adjustments in a separate reconciliation.
Review point
Document the actual return set and unresolved procedure questions.
The provider quotes from preliminary figures without defining missing-record work.
Question for the reviewer
Which missing records change the scope, cost or ability to complete the analysis?
Expected handoff
A source-gap and reconstruction scope file.
Separate facts supported by documents from estimates and unresolved assumptions. Assign each missing item to a responsible person and a date. Send the reconciliation alongside the source references so the reviewer can trace each conclusion.