For openSUSE 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Documentation:Tools:Auto/openSUSE 15.4/Documentation:Tools:Auto.repo
zypper refresh
zypper install daps
For SLE 15 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Documentation:Tools:Auto/SLE_15_SP4/Documentation:Tools:Auto.repo
zypper refresh
zypper install daps
For SLE 15 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Documentation:Tools:Auto/SLE_15_SP3/Documentation:Tools:Auto.repo
zypper refresh
zypper install daps