Dear Sirs, during this year we perform refactoring of a part of the code registry, which relates to EPP communication. The first group of amendments, which is currently preparing to deploy to production relates primarily to functions to manage contacts (create, update, info, delete, check, transfer). Within the code refactoring we simultaneously perform analysis of the accuracy of existing implementation and during this analysis we found some of the existing properties which could be improved. We included only such changes that should not, in our opinion, disrupt functioning of your systems. In the test instance, there is deployed a version where all the changes are already applied. Changes can be summarized in the following points: (1) Certain operations returned an error code which did not quite match the significance of a given specification. The new implementation returns a correct error code. (2) Update, info, delete and transfer functions newly do not perform a syntax check of the specified identifier. The object is either in the registry and then there is performed the desired operation over it or it is not in the registry and then there is returned an error that the object was not found. Syntax check remains only in the check and create functions. (3) There are removed leading and trailing sequences of whitespace from the string values at the input. (4) For better readability, we limit the set of characters for automatic authinfo code generation. (5) The order of entry inspections is changed, that carries out some operations. Regarding the term of the shutdown we will inform you in a standard way. Thank you and kind regards Marketa Kusickova -- Markéta Kušičková CZ.NIC, z.s.p.o. Milešovská 5 130 00 Praha 3 T +420 222 745 125 M +420 603 826 732