Is Indonesia's e-visa validity the same as the stay of limit?

No. Indonesia's e-visa validity and the stay limit are not the same. 

The validity of a visa refers to the period during which the visa holder is permitted to enter an Indonesian port of entry. This period starts from the date the visa is issued and ends on the expiration date specified on the visa. Travelers must visit Indonesia using this visa within 90 days after the date of issuance since it is valid for 90 days from the date a visa is issued.

On the other hand, the visa's stay limit is the maximum amount of time that a visa holder is permitted to stay in Indonesia. Once a traveler enters the country using this e-visa, they are allowed a maximum stay of 30 days.

This single-entry visa does not permit re-entry or extensions beyond the initial 30-day period without leaving the country. Therefore, visitors must carefully plan their travel dates and duration of stay to ensure compliance with Indonesian immigration regulations. Misunderstanding this difference could result in overstaying, which may result in fines, penalties, or future entry bans. 

Additionally, travelers should also be aware that even though their e-visa is valid for three months, their permitted time within Indonesia is restricted to a much shorter duration, thereby requiring efficient travel planning and time management.