diff --git a/mango_v4.json b/mango_v4.json
index 9b6f7f89f..2d8ec85f9 100644
--- a/mango_v4.json
+++ b/mango_v4.json
@@ -7202,6 +7202,23 @@
         ]
       }
     },
+    {
+      "name": "CheckLiquidatable",
+      "type": {
+        "kind": "enum",
+        "variants": [
+          {
+            "name": "NotLiquidatable"
+          },
+          {
+            "name": "Liquidatable"
+          },
+          {
+            "name": "BecameNotLiquidatable"
+          }
+        ]
+      }
+    },
     {
       "name": "OracleType",
       "type": {
diff --git a/programs/mango-v4/src/state/orderbook/book.rs b/programs/mango-v4/src/state/orderbook/book.rs
index 9d9d61aa9..bd5f1a37f 100644
--- a/programs/mango-v4/src/state/orderbook/book.rs
+++ b/programs/mango-v4/src/state/orderbook/book.rs
@@ -138,12 +138,13 @@ impl<'a> Orderbook<'a> {
                 matched_order_changes.push((best_opposing.handle, new_best_opposing_quantity));
             }
 
+            let seq_num = event_queue.header.seq_num;
             let fill = FillEvent::new(
                 side,
                 maker_out,
                 best_opposing.node.owner_slot,
                 now_ts,
-                event_queue.header.seq_num,
+                seq_num,
                 best_opposing.node.owner,
                 best_opposing.node.client_order_id,
                 market.maker_fee,
@@ -160,7 +161,7 @@ impl<'a> Orderbook<'a> {
             emit!(FilledPerpOrderLog {
                 mango_group: market.group.key(),
                 perp_market_index: market.perp_market_index,
-                seq_num: event_queue.header.seq_num,
+                seq_num: seq_num,
             });
         }
         let total_quote_lots_taken = order.max_quote_lots - remaining_quote_lots;
diff --git a/ts/client/src/mango_v4.ts b/ts/client/src/mango_v4.ts
index c477dc940..39e090132 100644
--- a/ts/client/src/mango_v4.ts
+++ b/ts/client/src/mango_v4.ts
@@ -7202,6 +7202,23 @@ export type MangoV4 = {
         ]
       }
     },
+    {
+      "name": "CheckLiquidatable",
+      "type": {
+        "kind": "enum",
+        "variants": [
+          {
+            "name": "NotLiquidatable"
+          },
+          {
+            "name": "Liquidatable"
+          },
+          {
+            "name": "BecameNotLiquidatable"
+          }
+        ]
+      }
+    },
     {
       "name": "OracleType",
       "type": {
@@ -16234,6 +16251,23 @@ export const IDL: MangoV4 = {
         ]
       }
     },
+    {
+      "name": "CheckLiquidatable",
+      "type": {
+        "kind": "enum",
+        "variants": [
+          {
+            "name": "NotLiquidatable"
+          },
+          {
+            "name": "Liquidatable"
+          },
+          {
+            "name": "BecameNotLiquidatable"
+          }
+        ]
+      }
+    },
     {
       "name": "OracleType",
       "type": {