Execute a saved search and retrieve results via NetSuite REST and SuiteScript

Steps

1. For REST-based access, authenticate using OAuth 1.0a (TBA - Token Based Authentication): create an integration record in NetSuite, generate an access token for a specific role, and sign each request with the consumer key, consumer secret, token, and token secret using HMAC-SHA256.
2. To run a saved search via SuiteScript 2.x, use the N/search module: call search.load with the saved search internal ID, then call savedSearch.run().getRange to retrieve result rows in batches of up to 1000.
3. To execute a saved search via the REST Record API, use the SuiteQL endpoint: POST to /services/rest/query/v1/suiteql with a SQL-like query body; this is the recommended REST approach for record queries.
4. Paginate SuiteQL results using the 'offset' and 'limit' query parameters on the SuiteQL endpoint, or using the 'hasMore' and pagination links in the response.
5. Map SuiteQL column names to internal field IDs (e.g., 'tranid' for transaction number, 'entity' for customer); use the NetSuite Records Browser or field inspector to confirm internal IDs before querying.