From HEXONET Wiki
This command is used to create an AuthInfo1, an Authorization Code for a .DE domain, which is need in order to transfer a .DE domain to another registrar which supports the AuthInfo transfer procedure for .DE domains
COMMAND
(required) command = DENIC_CreateAuthInfo1 domain = (DOMAIN) (optional) auth = <TEXT> x-de-authinfo1-expirationdate = <DATE>
RESPONSE
X-DE-AUTHINFO1-EXPIRATIONDATE