CIL - accounting treatment

I wondered if anyone could confirm that my understanding of the code of practice is correct in relation to CIL. I understand that when a developer enters into an agreement with a charging authority (my authority) the levy is paid to the authority and shown in the I&E and treated as a receipt in advance until such point that the authority has utilised the levy. After reading the guidance I feel that the levy is treated as revenue and not capital. Could someone let me know if my interpretation is correct please.

Thank you,