Number of months When enabling URL Validation, the signed URL can be used up to 30 days after it's generated (according to Duration configured when enabling this feature). The number of months (1 month = 30.4 days, up to 10 years) you set in this field will be added to the Duration value set in Live service. For example, if Duration is 30 days and you set this field to 10 months, the signed URL generated will be valid for 334 days (30 + 30.4*10 = 334). Please notice that, in a certain way, this defeats the purpose of enabling URL Validation in the first place, which is to prevent live resources from being stolen. See more details at our Live URL Validation help center page.