/usr/share/doc/dacs-examples/dtd-xsd/ is in dacs-examples 1.4.38a-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/dacs-examples/dtd-xsd/Configuration.dtd
/usr/share/doc/dacs-examples/dtd-xsd/Configuration.rnc
/usr/share/doc/dacs-examples/dtd-xsd/access_token.dtd
/usr/share/doc/dacs-examples/dtd-xsd/access_token.rnc
/usr/share/doc/dacs-examples/dtd-xsd/acl.dtd
/usr/share/doc/dacs-examples/dtd-xsd/acl.rnc
/usr/share/doc/dacs-examples/dtd-xsd/acl_index.dtd
/usr/share/doc/dacs-examples/dtd-xsd/acl_index.rnc
/usr/share/doc/dacs-examples/dtd-xsd/auth_reply.dtd
/usr/share/doc/dacs-examples/dtd-xsd/auth_reply.rnc
/usr/share/doc/dacs-examples/dtd-xsd/common.dtd
/usr/share/doc/dacs-examples/dtd-xsd/common.rnc
/usr/share/doc/dacs-examples/dtd-xsd/credentials.dtd
/usr/share/doc/dacs-examples/dtd-xsd/credentials.rnc
/usr/share/doc/dacs-examples/dtd-xsd/crypt_keys.dtd
/usr/share/doc/dacs-examples/dtd-xsd/crypt_keys.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_acs.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_acs.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_admin.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_auth_agent.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_auth_reply.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_auth_transfer.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_auth_transfer.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_conf_reply.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_conf_reply.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_current_credentials.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_current_credentials.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_group.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_group.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_infocard.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_list_jurisdictions.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_list_jurisdictions.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_notices.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_passwd.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_select_credentials.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_user_info.dtd
/usr/share/doc/dacs-examples/dtd-xsd/dacs_user_info.rnc
/usr/share/doc/dacs-examples/dtd-xsd/dacs_version.dtd
/usr/share/doc/dacs-examples/dtd-xsd/groups.dtd
/usr/share/doc/dacs-examples/dtd-xsd/groups.rnc
/usr/share/doc/dacs-examples/dtd-xsd/password.rnc
/usr/share/doc/dacs-examples/dtd-xsd/roles_reply.dtd
/usr/share/doc/dacs-examples/dtd-xsd/roles_reply.rnc
/usr/share/doc/dacs-examples/dtd-xsd/selected_credentials.dtd
/usr/share/doc/dacs-examples/dtd-xsd/store_reply.dtd