diff --git a/api-v3/test/unit/f5-inventory-authoritative-contract.test.ts b/api-v3/test/unit/f5-inventory-authoritative-contract.test.ts
index 97106d5..ac4eeed 100644
--- a/api-v3/test/unit/f5-inventory-authoritative-contract.test.ts
+++ b/api-v3/test/unit/f5-inventory-authoritative-contract.test.ts
@@ -20,6 +20,7 @@ test('F5 territory preload is exactly the authorized Tablas de yacimiento y area
   assert.equal(source.rows.length, 230);
 
   const areas = new Set(source.rows.map((row) => key(row.area)));
+  const literalYacimientoNames = new Set(source.rows.map((row) => row.yacimiento.trim()));
   const yacimientos = new Set(source.rows.map((row) => key(row.yacimiento)));
   const areaYacimiento = new Set(source.rows.map((row) => `${key(row.area)}|${key(row.yacimiento)}`));
   const departments = new Set(source.rows.map((row) => key(row.departamento)));
@@ -27,12 +28,26 @@ test('F5 territory preload is exactly the authorized Tablas de yacimiento y area
   const operators = new Set(source.rows.map((row) => key(row.empresaOperadora)));
 
   assert.equal(areas.size, 64);
-  assert.equal(yacimientos.size, 220);
+  // The authorized workbook contains 220 literal Yacimiento names. The F5 key
+  // intentionally folds accents/punctuation/case, so one pair of literal names
+  // collides into the same normalized key. Yacimiento identity is Area+Yacimiento,
+  // never a globally-unique normalized name.
+  assert.equal(literalYacimientoNames.size, 220);
+  assert.equal(yacimientos.size, 219);
   assert.equal(areaYacimiento.size, 230);
   assert.equal(departments.size, 7);
   assert.equal(concessionTypes.size, 2);
   assert.equal(operators.size, 13);
 
+  const literalNamesByKey = new Map<string, Set<string>>();
+  for (const row of source.rows) {
+    const normalized = key(row.yacimiento);
+    const literals = literalNamesByKey.get(normalized) ?? new Set<string>();
+    literals.add(row.yacimiento.trim());
+    literalNamesByKey.set(normalized, literals);
+  }
+  assert.equal([...literalNamesByKey.values()].filter((items) => items.size > 1).length, 1);
+
   const areasByYacimiento = new Map<string, Set<string>>();
   for (const row of source.rows) {
     const yacimiento = key(row.yacimiento);