Retrieval and translation of records from several jurisdictions, the adviser time needed to reconcile them, and the legal time needed to assess the result. Ask for a scope that names how many entities and periods are included, and what happens if further records surface partway through.
Decide what is worth chasing
Not every historical record is needed. Once counsel identifies which period must be evidenced, effort can concentrate there rather than on a complete career history. Ask for that narrowing before commissioning translations.
Agree what happens financially if the qualifying year cannot be established from available records, and whether that assessment is made before the rest of the preparation proceeds. Ask counsel to narrow the period that must be evidenced before commissioning any translations, because effort spent on a complete career history is usually wasted. Once the relevant window is identified, retrieval and translation can concentrate there.
Request a scope naming how many entities and periods are covered and stating what happens if further records surface partway through, since a scattered history has a habit of producing one more affiliate. Agree in advance what happens financially if the qualifying year cannot be established from the records available, and whether that assessment is made before the rest of the preparation proceeds. Confirm official charges when each step arrives, since they vary by route and change over time.