diff --git a/openfut-adapter-fifa17/src/fut/club_response.rs b/openfut-adapter-fifa17/src/fut/club_response.rs
index 6d39a46..311ac4f 100644
--- a/openfut-adapter-fifa17/src/fut/club_response.rs
+++ b/openfut-adapter-fifa17/src/fut/club_response.rs
@@ -88,6 +88,7 @@ mod tests {
             Fifa17Identity {
                 item_id: 100000001,
                 asset_id: 20801,
+                resource_id: 20801,
             },
         )]));
         let items = vec![item(
@@ -155,6 +156,7 @@ mod tests {
             Fifa17Identity {
                 item_id: 100000002,
                 asset_id: 158023,
+                resource_id: 158023,
             },
         )]));
         // Synthetic club "Northgate United" has no FIFA team id.
diff --git a/openfut-adapter-fifa17/src/fut/item.rs b/openfut-adapter-fifa17/src/fut/item.rs
index 614fcad..5c1fdf5 100644
--- a/openfut-adapter-fifa17/src/fut/item.rs
+++ b/openfut-adapter-fifa17/src/fut/item.rs
@@ -52,7 +52,13 @@ pub struct CoreOwnedItem {
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct Fifa17Identity {
     pub item_id: u32,
+    /// Base FIFA player asset (low 24 bits the client resolves art/name from).
     pub asset_id: u32,
+    /// Full versioned resource id = `(version << 24) | asset_id`. Equals
+    /// `asset_id` for a version-0 base card. This is the wire
+    /// `resourceId`/`definitionId`, kept DISTINCT from `asset_id` so a versioned
+    /// (special) card never collapses onto its base on the wire.
+    pub resource_id: u32,
 }
 
 /// Supplies the FIFA numeric identity for a Core item. Returning `None` means
@@ -80,7 +86,10 @@ fn discard_value(rating: u8) -> i64 {
     }
 }
 
-/// Build one FIFA `_item` object (version byte 0x00 → `resourceId == assetId`).
+/// Build one FIFA `_item` object. `resourceId`/`definitionId` carry the full
+/// versioned resource id; `assetId`/`cardassetid` carry the base asset. For a
+/// version-0 base card these coincide; for a special they differ and MUST NOT
+/// be collapsed.
 ///
 /// This is the single source of truth for a player item's on-wire shape; the
 /// `/club` envelope and squad projection both call it, so their items are
@@ -104,10 +113,10 @@ pub fn shape_item(
         .collect();
     json!({
         "id": id.item_id,
-        "resourceId": asset,
+        "resourceId": id.resource_id,
         "assetId": asset,
         "cardassetid": asset,
-        "definitionId": asset,
+        "definitionId": id.resource_id,
         "cardsubtypeid": 0,
         "itemType": "player",
         "rareflag": 1,
@@ -162,6 +171,7 @@ mod tests {
             Fifa17Identity {
                 item_id: 100000001,
                 asset_id: 20801,
+                resource_id: 20801,
             },
             &ent,
         );
@@ -193,6 +203,7 @@ mod tests {
             Fifa17Identity {
                 item_id: 100000030,
                 asset_id: 101490,
+                resource_id: 101490,
             },
             &ent,
         );
@@ -201,6 +212,7 @@ mod tests {
             Fifa17Identity {
                 item_id: 100000031,
                 asset_id: 101490,
+                resource_id: 101490,
             },
             &ent,
         );
@@ -215,4 +227,25 @@ mod tests {
         assert_eq!(a["id"], 100000030);
         assert_eq!(b["id"], 100000031);
     }
+
+    #[test]
+    fn versioned_special_keeps_resourceid_distinct_from_assetid() {
+        // A versioned (special) card: resourceId/definitionId carry the full
+        // versioned id; assetId/cardassetid stay the base asset. They MUST NOT
+        // collapse. (resource 117617092 = version 7 of asset 176580.)
+        let ent = entities();
+        let it = shape_item(
+            &item("oc-v", "fifa17_117617092", 92, "ST"),
+            Fifa17Identity {
+                item_id: 100000384,
+                asset_id: 176580,
+                resource_id: 117617092,
+            },
+            &ent,
+        );
+        assert_eq!(it["resourceId"], 117617092, "versioned resource id on the wire");
+        assert_eq!(it["definitionId"], 117617092);
+        assert_eq!(it["assetId"], 176580, "base asset id preserved");
+        assert_eq!(it["cardassetid"], 176580);
+    }
 }
diff --git a/openfut-adapter-fifa17/src/fut/squad_projection.rs b/openfut-adapter-fifa17/src/fut/squad_projection.rs
index 2bfc472..568796c 100644
--- a/openfut-adapter-fifa17/src/fut/squad_projection.rs
+++ b/openfut-adapter-fifa17/src/fut/squad_projection.rs
@@ -287,6 +287,7 @@ mod tests {
             Fifa17Identity {
                 item_id: 100000042,
                 asset_id: 20801,
+                resource_id: 20801,
             },
         )]));
         let input = one_slot_input(&owned, SquadExtInput::Fresh(fresh_ext()));
@@ -359,6 +360,7 @@ mod tests {
                 Fifa17Identity {
                     item_id: 100000030,
                     asset_id: 101490,
+                    resource_id: 101490,
                 },
             ),
             (
@@ -366,6 +368,7 @@ mod tests {
                 Fifa17Identity {
                     item_id: 100000031,
                     asset_id: 101490,
+                    resource_id: 101490,
                 },
             ),
         ]));
diff --git a/openfut-adapter-fifa17/tests/squad_projection.rs b/openfut-adapter-fifa17/tests/squad_projection.rs
index 97a576e..c9904ed 100644
--- a/openfut-adapter-fifa17/tests/squad_projection.rs
+++ b/openfut-adapter-fifa17/tests/squad_projection.rs
@@ -110,6 +110,7 @@ fn oracle_tables() -> (HashMap<String, CoreOwnedItem>, TableIdentity) {
             Fifa17Identity {
                 item_id: wire as u32,
                 asset_id: asset,
+                resource_id: asset,
             },
         );
     }
diff --git a/openfut-utas-host/src/lib.rs b/openfut-utas-host/src/lib.rs
index 1198a9b..758c72d 100644
--- a/openfut-utas-host/src/lib.rs
+++ b/openfut-utas-host/src/lib.rs
@@ -551,6 +551,7 @@ impl ItemIdentityResolver for Fifa17IdentityResolver {
             // Wire ids live in 1e8..9e8 (policy) — well within u32.
             item_id: wire as u32,
             asset_id: ident.asset_id,
+            resource_id: ident.resource_id,
         })
     }
 }