When using the OO-SA integration operations that target port 443 SA redirects these calls using an internal load balancer to a particular slice.
This can make it difficult to determine if the issue is with just one particular slice as this slice may not be the original target sent by OO.
By changing the port to 4433 and the the desired slice or host in the operation inputs it is possible to test and verify each slice without redirection.
This applies to all currently supported OO and SA versions.
The knowledge base article can be found at: https://softwaresupport.hp.com/group/softwaresupport/search-result/-/facetsearch/document/KM01573353