Jack Martin Feb 6:

I believe AP means Presentation (apresentação) in Notary matters in Portugal.

philgoddard Feb 3:

Apresentação means submission, so if the answer to the previous question is correct, then so is your suggested translation.

Robert Farren Feb 3:

A certidão permanente is an extract from a Portuguese official register, which can be obtained for a small fee and accessed online for official business, using a specially created code. This simplifies property transactions and many other bureaucratic procedures, since it replaces official extracts in paper form.

philgoddard Feb 3:

We've had this before in Portuguese to Italian. It says 'apresentação', but doesn't give any references, so I don't know if it's right.
http://www.proz.com/kudoz/portuguese-to-italian/law-general/...
It's a company registration certificate.

philgoddard Feb 3:

I don't see why averbamento would be abbreviated to AP. Also, it means the same as registro.
What is a 'permanent certificate'?