(11)An institution that is able to model an instrument included in one of the benchmarking portfolios for market risk and that has received permission from its competent authority to use an internal approach to calculate the risk-weighted exposure amount or the own funds requirement for that type of instrument, should report all the relevant data for that instrument as required by this Regulation, irrespective of whether the institution has such instrument in its books at the time of reporting. However, if an institution that has received the abovementioned permission lacks adequate experience in modelling a specific instrument and has therefore not received its management's approval to model the instrument, it should not provide data on the individual portfolios that include the instrument, as this would risk corrupting the resulting dataset. In such cases the institution should report the portfolios that will not be included in their data submission and provide the reasons for their exclusion.