If you are given a new oracle apps project to work, the first thing you need to know is the organization structure. So if you have the DB access just run the below query. You can find out the LE-SOB-OU-INVORG mapping.
SELECT
ood.organization_code Warehouse_code,
ood.organization_name Warehouse,
ood.operating_unit OU_ID,
hou.name OU_Name,
hle.name Legal_entity,
hle.set_of_books_id,
gsob.name SOB
FROM
org_organization_definitions ood,
hr_operating_units hou,
hr_legal_entities hle,
gl_sets_of_books gsob
WHERE
ood.operating_unit = hou.organization_id
AND hou.legal_entity_id = hle.organization_id
AND gsob.set_of_books_id = hle.set_of_books_id
