Proof of Claim by operational creditors requires specified details, supporting documents, and a notarised affidavit for voluntary liquidation. Form B requires operational creditors to submit a Proof of Claim under Regulation 16 with identity and contact details, the total amount claimed as at liquidation commencement date and nature of the claim, particulars of when and how the debt arose, disputes or pending proceedings, mutual set offs, retention of title or securities, assignments, bank account for distribution, and supporting documents; signature by creditor or authorised representative and identity proof are required, together with a notarised affidavit and verification attesting to the genuineness of the debt and absence of undisclosed satisfaction or security.