You will in some circumstances but not all. Some banks, government bodies and private individuals or businesses in transactions overseas (not in Seychelles) may ask for apostilled documents.
An apostille is an internationally recognized form of authentication. It is an international certification comparable to a notarisation in domestic law. The sole function of the apostille is to identity any stamp or seal affixed to an official document, to certify the authenticity of the signature on the document, and the capacity in which the person signing the document acted.
Under the Hague Convention, participating countries have agreed to recognize public documents issued by other signatory countries if those public documents are authenticated by the apostille. The apostille guarantees that public documents issued in one signatory country will be recognized as valid in another signatory country.