Operational creditor proof of claim form requires debt details, supporting documents, set-off disclosure, and verification. Proof of claim by operational creditors, other than workmen and employees, under the insolvency resolution process for corporate persons is to be submitted in Form B. The form requires identification of the operational creditor and corporate debtor, disclosure of the total claim with interest, supporting documents, any dispute or pending proceedings, the manner in which the debt was incurred, mutual dealings for set-off, and particulars of any security or retention of title arrangement. It also requires bank account details, a list of documents, and a declaration and verification of the claim.