From 7337c4b9d7b64fb55d84ef3229e79a4f6f237932 Mon Sep 17 00:00:00 2001
From: Vitaly Drogan <vitaliy.drogan@gmail.com>
Date: Mon, 4 Nov 2024 13:05:02 +0100
Subject: [PATCH] rpctypes ok when validating cancellations

---
 rpctypes/types.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/rpctypes/types.go b/rpctypes/types.go
index 37b0155..008be8d 100644
--- a/rpctypes/types.go
+++ b/rpctypes/types.go
@@ -223,7 +223,9 @@ func uniqueKeyMevSendBundle(b *MevSendBundleArgs, hash hash.Hash) {
 }
 
 func (b *MevSendBundleArgs) Validate() (common.Hash, error) {
-	if len(b.Body) == 0 {
+	// only cancell call can be without txs
+	// cancell call must have ReplacementUUID set
+	if len(b.Body) == 0 && b.ReplacementUUID == "" {
 		return common.Hash{}, ErrBundleNoTxs
 	}
 	return hashMevSendBundle(0, b)