The API is working correctly. In this example, it returns a default response.

To get a real (non-default) response, please execute the following query:
SELECT
sm.request_id,
sbi.MILESTONE_ID
FROM
SRD_MILESTONE sm
INNER JOIN
SRD_MILESTONE_PROFILE sbi
ON sm.id = sbi.MILESTONE_ID
WHERE
sm.DTYPE = 'GPON';
This will provide a list of request_id values that can be used for testing and should return non-default data.

Please also refer to the attached screenshot, where I tested this in my local environment.

Please provide a sample in Omantel platforms 179 and 84 and to be demoed in SRD UI

What it does:
Returns GPON design parameters (total cost, distance to exchange, vendor, exchange list)
by reading the GPON Milestone profiles for the given requestId.

Find valid requestId from DB:
SELECT m.REQUEST_ID, SUM(p.COST), COUNT(p.ID)
FROM SRD_MILESTONE m
JOIN SRD_MILESTONE_PROFILE p ON p.MILESTONE_ID = m.ID
WHERE m.DTYPE = 'GPON' GROUP BY m.REQUEST_ID HAVING COUNT(p.ID) > 0;

UI Check: Open request id → GPON Milestone tab.
Values shown should match the aggregated API response.

see attached screenshots