Help with Patching an Absence Entry using REST API

Summary

HTTP 404 Not Found when I try to patch /hcmRestApi/resources/11.13.18.05/absences/{personAbsenceEntryId}

Content

Hi Community,

I am attempting to perform a simple Patch on an absence entry using /hcmRestApi/resources/11.13.18.05/absences/{personAbsenceEntryId}.

Payload is:

{
    "startDate": "2017-10-24",
    "endDate": "2017-10-30"
}

Documentation states that I need to directly patch to the {personAbsenceEntryId}. However whenever I try to do this with SoapUI, I am getting HTTP/1.1 404 Not Found. This is a specific issue with specifying the  {personAbsenceEntryId} as GET with finder and q= are working fine.

Any pointers appreciated. I attach a screenshot of the request/response in SoapUI. Thanks,