Affidavit of service establishes proof of petition delivery to the Liquidator and records mode of service. Form No. 23 is an affidavit by a deponent affirming that a copy of the petition/application, duly sealed with the NCLT seal, was served on the Liquidator either by personal delivery at a stated place and time or by registered post; the affidavit refers to annexed proof such as the postal receipt and acknowledgement and identifies the served copy as the petition/application produced and marked 'A', concluding with the deponent's solemn affirmation.