We run from the UI the command - | rest /servicesNS/-/<app name>/data/transforms/lookups/
.
We get the results but also an error for each indexer saying - REST Processor: Failed to fetch REST endpoint uri=https://127.0.0.1:8089/servicesNS/-/<app name>/data/transforms/lookups/?count=0
It says uri=https
in the error while the search heads run on http...
try | rest splunk_server=local /<app name>/-/search/data/transforms/lookups
try | rest splunk_server=local /<app name>/-/search/data/transforms/lookups
Very kind @cmerriman - works as advertised ; - )