Reconciliation symptoms (partner)

Symptom	First actions
Ingest rejected (422)	Fix tenant_id / partner_id / template / enums
409 conflict	Wait or start a new session_id — semantics
Accepted but status not complete	Query pipeline status; do not hammer same session
Exceptions not clearing	Confirm resolve payload + resolution_request_id — exception contract
Unexpected unmatched	Check files/template/mode before assuming platform loss

Deep stuck-session diagnosis (locks, workers, DLQ) is internal — open a ticket with triage if status stays non-terminal past your agreed SLA window.