User is using an ODC On Prem Agent to collect reading from PI. Readings are collected on a schedule as intended, however when manually invoking Request Reading the On Prem Agent does not poll the reading.
On the ODC Indicator Properties view > ODC tab > ODC Rules subtab, create an ODC Polling Rule and link a Polling Schedule. If you do not want the reading to be taken regularly, use a long term polling schedule such as yearly.
VSTS174531 has been created to enhance APM to not require a polling schedule to be linked to the ODC Indicator for the ODC Agent to accept a manually invoked Request Reading.