diff --git a/package.json b/package.json
index 86a67c4..56e49ac 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.19.28",
+  "version": "0.19.29",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/services/Aggregator/ws/schemas/addressUpdateSchema.ts b/src/services/Aggregator/ws/schemas/addressUpdateSchema.ts
index 656eda8..1c2b45a 100644
--- a/src/services/Aggregator/ws/schemas/addressUpdateSchema.ts
+++ b/src/services/Aggregator/ws/schemas/addressUpdateSchema.ts
@@ -82,7 +82,7 @@ export const fullOrderSchema = z.object({
   c: subOrderSchema.array(),
   E: z.enum(executionTypes).optional(), // execution type
   C: z.string().optional(), // trigger condition
-  ro: z.boolean(), // is reversed order
+  ro: z.boolean().optional(), // is reversed order
 }).transform((val) => ({
   ...val,
   k: 'full' as const,