diff --git a/api/v1/cmb_cpn.proto b/api/v1/cmb_cpn.proto
index 26a9543..8512042 100644
--- a/api/v1/cmb_cpn.proto
+++ b/api/v1/cmb_cpn.proto
@@ -72,9 +72,9 @@ message CmbRequest {
   // 掌上生活密钥对别名
   string cmbKeyAlias = 6 [json_name = "cmbKeyAlias"];
   // 加密报文，是否需要加密，请查看各API的说明文档
-  string encryptBody = 7 [json_name = "encryptBody", (validate.rules).string = {min_len: 2}];
+  string encryptBody = 7 [json_name = "encryptBody"];
   // 签名，具体详见签名规范
-  string sign = 8 [json_name = "sign", (validate.rules).string = {min_len: 2}];
+  string sign = 8 [json_name = "sign"];
 }
 
 message CmbReply {
@@ -147,7 +147,7 @@ message CmbQueryReply {
 message CmbQueryProductRequest {
   // 业务参数
   // 外部合作方权益批次号
-  string activityId = 9 [json_name = "activityId"];
+  string activityId = 9 [json_name = "activityId", (validate.rules).string = {min_len: 1,max_len: 32}];
 }
 message CmbQueryProductReply {
   // 接口调用返回码，1000 成功，1001 失败