§ 16-2. Commitment of credit.

A commitment of the credit of the City shall be in writing and on such forms and in such number of copies as required by regulation of the Comptroller and for a sum certain for the performance of the entire work and shall be immediately filed with the Comptroller. Unless otherwise provided by the Charter, no commitment shall be valid unless there is on file with the City agency issuing the commitment a certificate by the Comptroller to the effect that funds are available and have been set aside in the proper appropriation for the payment of the commitment.