24/09/2026
🌍 WDD 1 — TERRITORIES, BORDERS AND JURISDICTIONS
Territorial verification begins with the country boundary and continues through every administrative level applicable to the location.
ADM0, ADM1 and ADM2 were not created by one company. They form an international de facto GIS convention developed through the work of defense and mapping authorities, international organizations and scientific institutions.
Level 0 (ADM0): Country boundaries
ADM0 is the external boundary of the state or territory. The review confirms:
• the internationally recognised boundary;
• the official name and status;
• whether the location is within a sovereign state, dependent territory or special-status territory;
• any territorial dispute, occupation or foreign control;
• any difference between legal status and effective administration.
Level 1 (ADM1): First-level divisions
ADM1 covers the largest internal units directly below the national level, including states, regions, provinces, autonomous communities, cantons, constituent countries or territories.
The name does not determine the level. The country’s constitutional and administrative hierarchy must be reviewed.
Level 2 (ADM2): Second-level divisions
ADM2 is the next level below ADM1. It may include counties, districts, departments, provinces below a higher regional level, metropolitan areas or municipalities forming the second level.
Lower administrative levels
Countries may also use ADM3, ADM4 or lower units: municipalities, communes, boroughs, parishes, local councils, city districts and villages.
The hierarchy is not uniform. A municipality may be ADM1 in one jurisdiction, ADM2 in another and ADM3 elsewhere.
Territorial labels vary significantly between countries, so the same term may describe different positions in the hierarchy. Verification must therefore rely on official constitutional, administrative and geospatial sources for the exact location, not on terminology alone or general assumptions.
SALB — Second Administrative Level Boundaries
https://geodataviewer.com/datasets/boundaries/un-salb-boundaries/
SALB helps identify administrative structure, official ADM1 and ADM2 names, boundary geometry, hierarchy and historical changes.
SALB does not determine sovereignty or register territorial title. A boundary shown in SALB is not a United Nations legal decision on the status of a country, territory or disputed area.
WDD 1 verification sequence
ADM0 country → ADM1 region → ADM2 district or equivalent → lower national administrative levels
At each level, confirm:
• official name;
• boundary and hierarchy;
• responsible authority;
• effective date of the current boundary;
• special, autonomous or disputed status.
The WDD 1 outcome is a documented territorial hierarchy showing exactly which state and administrative jurisdictions apply to the asset’s location.
Olga Bukreeva
Advisory in Real Estate, Land Assets & Compliance