Print Nlapi Debug Logs is used to capture $R logs in NetSuite SuiteScripts if they do not show up in IO debugger. Select the destination field Print Nlapi Debug Logs and give it a value of "true" to enable logging.
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When this mapping is set and hard-coded to "true" on any NetSuite import, the debug logs for the NetSuite connection must be turned on. After a record is imported, the debug logs will capture the SuiteScript code execution that followed from the import. The logs specific to this mapping will be prefixed with the statement:
nlapi calls registered for $R