Step 8: Retrieve product status back to the CSP

Once products are onboarded to the retailer channel (Step 7), the CSP can poll PDX's channel status endpoints to retrieve product status and surface it back to the supplier within the CSP's own interface — so suppliers can see submission outcomes directly.

The two endpoints used in the Feed API apply here:

Status for all products on all channels — for an initial sync or full refresh.
Status for changed products on all channels — for regular polling of updates only.

The CSP must poll for status changes. How frequently to poll is up to the CSP's implementation, balanced against how quickly suppliers need to see updated status.