`newer-debconf-templates`

debconf-updatepo has not been run since the last change to your debconf templates.

You should run debconf-updatepo whenever debconf templates files are changed so that translators can be warned that their files are outdated.

This can be ensured by running debconf-updatepo in the 'clean' target of debian/rules. PO files will then always be up-to-date when building the source package.