ECB-PUBLIC Questions and Answers Question : EndToEnd id of Billing Invoice Could you please confirm what will be the pattern of billing invoice number that will appear in the EndtoEnd field of the camt.054 message? Answer: The pattern of the billing invoice will be the following: o First 3 digits: ISO country code ( ISO 3166-1:2020 numeric – three-digit country codes) o Digits 4 and 5: service code : 01 TIPS, 02 T2S, 03 T2, 04 ECMS o Remaining digits: sequential number starting from 1 The invoice number will be contained in the EndToEndID of the pacs.010 direct debit and the related (optional) camt.054. 21 www.ecb.europa.eu ©