diff --git a/placement/schemas/allocation.py b/placement/schemas/allocation.py
index bdf93795f..b4daac684 100644
--- a/placement/schemas/allocation.py
+++ b/placement/schemas/allocation.py
@@ -172,7 +172,7 @@ POST_ALLOCATIONS_V1_28["patternProperties"] = {
 # request group suffixes with lists of resource provider uuids.
 mappings_schema = {
     "type": "object",
-    "minProperites": 1,
+    "minProperties": 1,
     "patternProperties": {
         common.GROUP_PAT_1_33: {
             "type": "array",
diff --git a/placement/tests/functional/gabbits/allocations-mappings.yaml b/placement/tests/functional/gabbits/allocations-mappings.yaml
index cd112a05f..6583c0109 100644
--- a/placement/tests/functional/gabbits/allocations-mappings.yaml
+++ b/placement/tests/functional/gabbits/allocations-mappings.yaml
@@ -70,8 +70,19 @@ tests:
       project_id: b2e599e0-ded8-47fd-b8ab-ceb7fca578bd
   status: 400
   response_json_paths:
-      # u? accounts for difference in Python 2.7 v. 3.x response
-      $.errors[0].detail: "/JSON does not validate: u?'beta' is not of type 'array'/"
+      $.errors[0].detail: "/JSON does not validate: 'beta' is not of type 'array'/"
+
+- name: put allocation mapping empty
+  PUT: /allocations/5f9588de-079d-462a-a459-408524ab9b60
+  data:
+      allocations: $HISTORY['mappings request'].$RESPONSE['$.allocation_requests[0].allocations']
+      mappings: {}
+      consumer_generation: null
+      user_id: 8c974f9a-f266-42f7-8613-a8017cbfb87F
+      project_id: b2e599e0-ded8-47fd-b8ab-ceb7fca578bd
+  status: 400
+  response_json_paths:
+      $.errors[0].detail: "/JSON does not validate: {} does not have enough properties/"
 
 - name: post allocation with results
   POST: /allocations
diff --git a/releasenotes/notes/create-allocation-empty-mapping-field-f5f97de6df891362.yaml b/releasenotes/notes/create-allocation-empty-mapping-field-f5f97de6df891362.yaml
new file mode 100644
index 000000000..17fee7ed4
--- /dev/null
+++ b/releasenotes/notes/create-allocation-empty-mapping-field-f5f97de6df891362.yaml
@@ -0,0 +1,9 @@
+---
+fixes:
+  - |
+    Since microversion 1.34, it has been possible to provide a ``mappings``
+    field when creating new allocations via the ``POST /allocations`` or ``PUT
+    /allocations/{allocation_id}`` APIs. This field should be a a dictionary
+    associating request group suffixes with a list of UUIDs identifying the
+    resource providers that satisfied each group. Due to a typo, this was
+    allowing an empty object (``{}``). This is now corrected.