In respect of a Liability Event as a result of which:
(a) the Data Communications Company owes a net liability to the Data Communications Company Service Providers collectively, the amount of such net liability (having taken into account amounts recoverable by the Data Communications Company in respect of that Liability Event otherwise than pursuant to this Charging Methodology, including amounts recoverable from other Parties as a result of any breach of this Code by such Parties which caused or contributed to that Liability Event), but only to the extent that the Data Communications Company estimates that such net liability will be recoverable by the Data Communications Company as Allowed Revenue; or
(b) the Data Communications Company Service Providers collectively owe a net liability to the Data Communications Company, the net amount actually received by the Data Communications Company in respect of such net liability (having taken into account amounts owed by the Data Communications Company to other Parties and to third parties in respect of that Liability Event otherwise than pursuant to this Charging Methodology), but only to the extent that the Data Communications Company estimates that such net liability will reduce the Allowed Revenue that the Data Communications Company could otherwise recover by way of the Charges (which net amount will be expressed as a negative number).