Financial requirement for a tourist visa to Portugal

Like most countries, Portugal requires tourist visa applicants to show that they have sufficient funds for their stay.

Exactly how much is needed depends on the itinerary, but the minimum given by the Portuguese embassy is:

The minimum amount required per day is the equivalent to €40.00 plus €75.00 per entry into the country.

For a 7 day visit, this is €355. At the time I looked this up on xe.com, that worked out to AED 1387.

Note that you may need more than this, depending on the specifics of your itinerary (e.g. this is not enough to stay in a 5 star hotel).

Your AED 15000 appears more than sufficient to pay for a very nice holiday.

There is no explicit minimum cash requirement for applying for a Schengen visa. You must be able to show that you can support yourself for the duration of your intended stay. You can be required to prove this both at the time of your application and also when you actually present yourself at the border for admission.

For a seven-day stay, AED 15,000 should be more than enough, but there are, of course, other considerations that might cause your application to be denied even if you have that balance in your bank account.