diff --git a/bw2io/strategies/locations.py b/bw2io/strategies/locations.py
index 611133c..b615a6e 100644
--- a/bw2io/strategies/locations.py
+++ b/bw2io/strategies/locations.py
@@ -29,7 +29,44 @@
 
 
 def update_ecoinvent_locations(db):
-    """Update old ecoinvent location codes"""
+    """
+    Update location names in ecoinvent database to fix inconsistencies and standardize naming.
+
+    Maps the old location names to the updated ones based on a predefined dictionary (GEO_UPDATE).
+
+    Parameters
+    ----------
+    db : list
+        A list of dictionaries representing ecoinvent processes with exchanges.
+
+    Returns
+    -------
+    list
+        A list of dictionaries representing the ecoinvent processes with updated location names.
+
+    Examples
+    --------
+    >>> db = [
+    ...     {
+    ...         "name": "Process 1",
+    ...         "location": "IAI Area 2, North America",
+    ...         "exchanges": [{"name": "Flow 1", "location": "IAI Area 2, North America"}],
+    ...     }
+    ... ]
+    >>> update_ecoinvent_locations(db)
+    [
+        {
+            "name": "Process 1",
+            "location": "IAI Area, North America",
+            "exchanges": [{"name": "Flow 1", "location": "IAI Area, North America"}],
+        }
+    ]
+
+    Notes
+    -----
+    Includes a hardcoded mapping (GEO_UPDATE) to fix known inconsistencies in location names. This may not
+    cover all possible inconsistencies and might need to be updated in the future.
+    """
     for ds in db:
         if "location" in ds:
             ds["location"] = GEO_UPDATE.get(ds["location"], ds["location"])