wish增加推广活动预算时，是否有许可的最低预算金额
？

是的，商户应向现有推广活动添加至少 $1.00 的预算。如果商户尝试向现有推广活动添加低于 $1.00 预算金额，则会出现错误信息：

Is there a minimum budget amount allowed when I add budget to my campaigns?

Yes, merchants should add a budget amount of $1.00 or more to existing campaigns. An error message will appear if merchants attempt to add a budget amount lower than $1.00 to existing campaigns: