The SHD Attestation (also known as Mantralaya Attestation) is one of the levels of verification that are used for state-level authentications such as birth certificates and marriage certificates. Documents from the same state will only be attested by the state that issued the document. For example, documents issued in Kerala will only be attested SHD, Kerala.
The Attestation of Personal Documents by the Home Department is the state-level attestation. In other words, the SHD attestation is the verification of the documents which fall under the personal category, after which the stamp of the Home Department of Kerala is obtained. SHD Attestation in Kerala has a team of officials who are only allowed to certify personal documents.