diff --git a/src/server/test.rs b/src/server/test.rs
index 80e9bdb1be..98d7391f6b 100644
--- a/src/server/test.rs
+++ b/src/server/test.rs
@@ -373,13 +373,21 @@ fn put_bso() {
 }
 
 #[test]
-fn put_meta_storage() {
+fn bsos_can_have_a_collection_field() {
     let start = SyncTimestamp::default();
     // test that "collection" is accepted, even if ignored
-    let body = json!({"id": "global", "collection": "meta", "payload": "SomePayload"});
-    let bytes = test_endpoint_with_body(http::Method::PUT, "/1.5/42/storage/meta/global", body);
-    let result: PutBso = serde_json::from_slice(&bytes).unwrap();
+    let bso1 = json!({"id": "global", "collection": "meta", "payload": "SomePayload"});
+    let bsos = json!(
+        [bso1,
+         {"id": "2", "collection": "foo", "payload": "SomePayload"},
+    ]);
+    let bytes = test_endpoint_with_body(http::Method::POST, "/1.5/42/storage/meta", bsos);
+    let result: PostBsos = serde_json::from_slice(&bytes.to_vec()).unwrap();
+    assert_eq!(result.success.len(), 2);
+    assert_eq!(result.failed.len(), 0);
 
+    let bytes = test_endpoint_with_body(http::Method::PUT, "/1.5/42/storage/meta/global", bso1);
+    let result: PutBso = serde_json::from_slice(&bytes).unwrap();
     assert!(result >= start);
 }
 
diff --git a/src/web/extractors.rs b/src/web/extractors.rs
index 6269bb963c..b0e5dfb6cd 100644
--- a/src/web/extractors.rs
+++ b/src/web/extractors.rs
@@ -75,8 +75,15 @@ impl BatchBsoBody {
     /// Function to convert valid raw JSON BSO body to a BatchBsoBody
     fn from_raw_bso(val: &Value) -> Result<BatchBsoBody, String> {
         let map = val.as_object().ok_or("invalid json")?;
-        // Verify all the keys are valid. modified is allowed but ignored
-        let valid_keys = ["id", "sortindex", "payload", "ttl", "modified"];
+        // Verify all the keys are valid. modified/collection are allowed but ignored
+        let valid_keys = [
+            "id",
+            "sortindex",
+            "payload",
+            "ttl",
+            "modified",
+            "collection",
+        ];
         for key_name in map.keys() {
             if !valid_keys.contains(&key_name.as_str()) {
                 return Err(format!("unknown field {}", key_name));