BUGFIX:订阅计划创建不允许指定子账号为管理员

src/main/resources/messages_en.properties

@@ -208,6 +208,7 @@ page.num.limit=The page number must be greater than 0.
 end.time.must.be.later.than.the.start.time=The subscription end time must be later than the start time.
 please.specify.the.organizationId=Please specify the organizationId.
 switch.failed.sub-account.not.under.your.active.subscription=Switch failed. Sub-account not under your active subscription.
+Sub-accounts.cannot.be.admins=Sub-accounts in a subscription cannot be designated as admins.
 
 # 可能会报异常
 # Informative:

src/main/resources/messages_zh.properties

@@ -204,6 +204,7 @@ page.num.limit=页码必须大于0
 end.time.must.be.later.than.the.start.time=订阅结束时间必须晚于开始时间
 please.specify.the.organizationId=请指定organizationId
 switch.failed.sub-account.not.under.your.active.subscription=切换失败，该子账号不属于您当前管理的订阅计划
+Sub-accounts.cannot.be.admins=在订阅中的子账号不能被指定为管理员
 
 # 可能会报异常
 # Informative: