diff --git a/src/keria/app/ipexing.py b/src/keria/app/ipexing.py
index 8b79d4a1..aff11d5c 100644
--- a/src/keria/app/ipexing.py
+++ b/src/keria/app/ipexing.py
@@ -169,7 +169,7 @@ def on_post(req, rep, name):
             case "/ipex/grant":
                 IpexGrantCollectionEnd.sendGrant(agent, hab, ked, sigs, rec)
             case "/multisig/exn":
-                IpexGrantCollectionEnd.sendMultisigExn(agent, hab, ked, atc, rec)
+                IpexGrantCollectionEnd.sendMultisigExn(agent, hab, ked, sigs, atc, rec)
 
         rep.status = falcon.HTTP_202
         rep.data = json.dumps(ked).encode("utf-8")
diff --git a/tests/app/test_ipexing.py b/tests/app/test_ipexing.py
index 9a67809c..011d4f86 100644
--- a/tests/app/test_ipexing.py
+++ b/tests/app/test_ipexing.py
@@ -291,3 +291,56 @@ def test_ipex_grant(helpers, mockHelpingNowIso8601, seeder):
         res = client.simulate_post(path="/identifiers/legal-entity/ipex/grant", body=data)
         assert res.status_code == 202
         assert res.json == exn.ked
+        assert len(agent.exchanges) == 1
+        assert len(agent.grants) == 1
+
+        ims = eventing.messagize(serder=exn, sigers=[coring.Siger(qb64=sigs[0])])
+        # Test sending embedded admit in multisig/exn message
+        exn, end = exchanging.exchange(route="/multisig/exn",
+                                       payload=dict(),
+                                       sender=le['i'],
+                                       embeds=dict(exn=ims),
+                                       date=helping.nowIso8601())
+
+        # Bad recipient
+        body = dict(
+            exn=exn.ked,
+            sigs=sigs,
+            atc=dict(exn=end.decode("utf-8")),
+            rec=["EZ-i0d8JZAoTNZH3ULaU6JR2nmwyvYAfSVPzhzS6b5CM"]
+        )
+
+        data = json.dumps(body).encode("utf-8")
+        res = client.simulate_post(path="/identifiers/legal-entity/ipex/grant", body=data)
+        assert res.status_code == 400
+        assert res.json == {'description': 'attempt to send to unknown '
+                                           'AID=EZ-i0d8JZAoTNZH3ULaU6JR2nmwyvYAfSVPzhzS6b5CM',
+                            'title': '400 Bad Request'}
+
+        # Bad attachments
+        body = dict(
+            exn=exn.ked,
+            sigs=sigs,
+            atc=dict(bad=end.decode("utf-8")),
+            rec=[pre1]
+        )
+
+        data = json.dumps(body).encode("utf-8")
+        res = client.simulate_post(path="/identifiers/legal-entity/ipex/grant", body=data)
+        assert res.status_code == 400
+        assert res.json == {'description': 'attachment missing for ACDC, unable to process request.',
+                            'title': '400 Bad Request'}
+
+        body = dict(
+            exn=exn.ked,
+            sigs=sigs,
+            atc=dict(exn=end.decode("utf-8")),
+            rec=[pre1]
+        )
+
+        data = json.dumps(body).encode("utf-8")
+        res = client.simulate_post(path="/identifiers/legal-entity/ipex/grant", body=data)
+
+        assert res.status_code == 202
+        assert len(agent.exchanges) == 3
+        assert len(agent.grants) == 2