correlation API returns 404 on both URL, there is probably wrong URL in doc, or must be something configured otherwise?
https://doi-adminui.<host>.<region>/oi/v2/topologyprocessor/correlation
Type Status report
message Requested path '/oi/v2/topologyprocessor/correlation' using method 'GET' not a configured resource
description EMM security requirements were not met by this request
https://apmservices-gateway.<host>.<region>/oi/oipublic/topologyprocessor/correlation
{"error":{"code":603,"message":"404 NOT_FOUND","traceId":"b14c5f4d5ea41d3a"}}
Provided this URL which resolved the issue
https://doi-adminui.<host>.<region>/oi/v2/oipublic/topologyprocessor/correlation