The preliminary level attestation begins at the notary level. Notaries are official authorities appointed by the government and entrusted with the right to verify the authenticity and attest to the documents. For educational documents, universities can carry out the attestation. It is the responsibility of the Chamber of Commerce to certify the authenticity of commercial documents.

After the completion of regional attestation by local notaries, the second level of attestation is followed by Home Department Attestation. Home department attestation is performed by the State Home Department, Human Resource Department and Sub-divisional Magistrate. Sub-divisional magistrate works independently of the State Home Department.

The Ministry of External Affairs plays an important role in the external affairs of a country. It has an irreplaceable role to play in the Attestation process. This applies to Oman too. However, Oman being a party of the Hague Convention, has to follow Apostille instead of Attestation. Apostille is a simple process that enables the use of documents in all the member countries of the Hague Convention to use foreign documents without further verification processes. 

Almost 106 countries follow the Hague Convention. Among the GCC countries, Oman is the only one that requires an Apostille.

Attestation for Oman ends with Embassy level attestation. Once the attestation is completed by the MEA, the Omani Embassy performs the attestation. With this attestation, the process gets completed and the certificate becomes usable in Oman for all official purposes.