I have custom flow which export customer and order data from FTP server and create Customers and Sales order in NetSuite. In the Sales order import step, an error is thrown related to Shipping cost calculation. Hence I added a mapping for Shipping method using handlebar as
@aishwaryamj in your error message, it shows you are missing a closing curly bracket at the very end. However, in your posted example of the expression you are using you have it. I'm able to get the same error if I leave off the last bracket, but can't get the same error if I have it. Can you confirm you do or don't have that last curly bracket on the mapping? Maybe screenshot your mappings as well and post here.
Thanks for the update. I have corrected the error by adding the missing closing bracket. Actually I did the mapping for Shipping method to resolve another error in my flow which is
"Failed to save record because Could not calculate cost for the selected Realtime rate. The requested service is unavailable between the selected locations."