In the case of contracts that do not have an expense, normally contracts for the management of special administrative public services, they must be reported with amounts of 0. In order to inform the Registry that they have an amount of 0 for both the tender and the estimated value of the award, the “flag” for amounts of a to be determined must be marked, since if this field is not marked, the Registry will a oblige to report these amounts.

In the event that these contracts without additional expenditure a involve some type of income for a l'the contracting body, this must be reported in the l'section "other economic data" found at the a level of the lot in the case of contracts: management of public services, concession of public works, special administrative i public-private collaboration.