Le BCN forniscono note esplicative alla BCE conformemente alla sezione 3 dell' allegato III , parte 11 , del presente indirizzo . ###>If transactions are estimated based on difference of two subsequent periods » stocks , time series shall either be unreported or reported as missing . NCBs shall provide explanatory notes to the ECB in accordance with Section 3 of Part 11 of Annex III to this Guideline .