diff --git a/bridgev2/networkinterface.go b/bridgev2/networkinterface.go
index bf2d60ee..d1d4215d 100644
--- a/bridgev2/networkinterface.go
+++ b/bridgev2/networkinterface.go
@@ -732,6 +732,13 @@ type CreateChatResponse struct {
 	// If a start DM request (CreateChatWithGhost or ResolveIdentifier) returns the DM to a different user,
 	// this field should have the user ID of said different user.
 	DMRedirectedTo networkid.UserID
+
+	FailedParticipants map[networkid.UserID]CreateChatFailedParticipant
+}
+
+type CreateChatFailedParticipant struct {
+	Reason        string         `json:"reason"`
+	InviteContent *event.Content `json:"invite_content,omitempty"`
 }
 
 // IdentifierResolvingNetworkAPI is an optional interface that network connectors can implement to support starting new direct chats.
diff --git a/bridgev2/provisionutil/creategroup.go b/bridgev2/provisionutil/creategroup.go
index acae9360..602ea9f8 100644
--- a/bridgev2/provisionutil/creategroup.go
+++ b/bridgev2/provisionutil/creategroup.go
@@ -22,6 +22,8 @@ type RespCreateGroup struct {
 	ID     networkid.PortalID `json:"id"`
 	MXID   id.RoomID          `json:"mxid"`
 	Portal *bridgev2.Portal   `json:"-"`
+
+	FailedParticipants map[networkid.UserID]bridgev2.CreateChatFailedParticipant `json:"failed_participants,omitempty"`
 }
 
 func CreateGroup(ctx context.Context, login *bridgev2.UserLogin, params *bridgev2.GroupCreateParams) (*RespCreateGroup, error) {
@@ -109,5 +111,7 @@ func CreateGroup(ctx context.Context, login *bridgev2.UserLogin, params *bridgev
 		ID:     resp.Portal.ID,
 		MXID:   resp.Portal.MXID,
 		Portal: resp.Portal,
+
+		FailedParticipants: resp.FailedParticipants,
 	}, nil
 }