Error: [USER_ERROR] Please Choose An Item To Add

Error Message

Unable to retrieve internal Id from write response.  [USER_ERROR] 
[Please choose an item to add]
If the error persists, please contact your Celigo representative.

Definition

Either there is no product on the opportunity, or the connector cannot locate the product/item in NetSuite using the NetSuite ID of the product in Salesforce. 

Steps To Resolve Error

1. Go to the item in NetSuite.  Look at the URL and copy the 3 or 4 digit number at the end of the URL.
   • Note:  Check the Internal ID of the item in NetSuite and see if it matches the 3-4 digit number at the end of the URL.
     • Example:  https://system.netsuite.com/app/common/item/item.nl?id=1234
2. Go to the product in Salesforce.  See if the 3 or 4 digit number is the same as the NetSuite ID value on the product in Salesforce.  Edit the NetSuite ID of the product and paste the 3-4 digit number which you copied earlier from the NetSuite item's URL.
3. Save and re-sync.