Query an LRS for xAPI voided statements and retrieve a voided statement by StatementRef id

Steps

1. To retrieve a voided statement by its original ID, issue GET /xapi/statements?voidedStatementId={original-statement-uuid} on the standard statements endpoint with the appropriate Accept and X-Experience-API-Version headers.
2. Parse the response: a successful retrieval returns the original voided statement object; a 404 indicates the statement either was never stored or does not exist as a voided statement.
3. To list voiding statements (the statements that performed the void), query GET /xapi/statements with the verb IRI http://adlnet.gov/expapi/verbs/voided and optionally filter by activity or agent.
4. Iterate through the StatementResult using the more property URL for pagination until more is absent or null.
5. For each voiding statement, inspect the object property which is a StatementRef containing the id of the voided statement.
6. Cross-reference voided statement ids against your application records to update downstream reporting or completion tracking.