For SLE 15 SP5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/science/SLE_15_SP5/science.repo
zypper refresh
zypper install openrefine
For SLE 15 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/science/SLE_15_SP4/science.repo
zypper refresh
zypper install openrefine
For SLE 15 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/science/SLE_15_SP3/science.repo
zypper refresh
zypper install openrefine
For SLE 15 SP2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/science/SLE_15_SP2/science.repo
zypper refresh
zypper install openrefine