Affidavit of service expert witnesses may opine regarding the process server’s work product. The National Association of Professional Process Servers has established the Standards, Best Practices and The Policy Manual for professional process servers which includes this information:
Jurat A jurat is a certificate by the person before whom a writing was sworn and is designed to compel truthfulness on the part of the signer. The jurat is completed during the execution of an affidavit and is generally written at the foot of an affidavit stating when, where, and before whom such affidavit was sworn. Before executing a jurat, a Notary Public must be satisfied as to the identity of the signor, and the voluntary nature of that person’s signature. The signing of the affidavit, and the execution of the jurat, is required by all states to be done at the same time in the physical presence of each other.
The jurat initiates a legal process that could eventually result in criminal conviction and punishment if the signor is later found to have lied.