The reason why this or similar orders got rejected by NetSuite
It seems that this order's Shopify shipping method isn't mapped with any NetSuite shipping method, as a result, our app didn't sync it to NetSuite.
How to fix this error:
Step 1a:
- Open Robust NetSuite Integrator app, and go to the Configuration page
- Scroll-down to this "Shopify Delivery Speeds" setting, further click on the Configure Mapping button

- Click on the Add Custom Shipping Method, and in the first field, enter this order's Shopify shipping method, and in the second field, enter its corresponding NetSuite shipping method internal ID, further hit the Submit button, and Save the changes
- Note: this step 1a is applicable, if you cannot find this order's Shopify shipping method inside this "Shopify Delivery Speeds" mapping
- Open Robust NetSuite Integrator app, and go to the Configuration page
- Scroll-down to this "Shopify Delivery Speeds" setting, further click on the Configure Mapping button

- Search for this order's Shopify shipping method, and enter its corresponding NetSuite Internal ID in this "NS Shipping Method Internal Id" field, further, Save the changes
- Note: This step 1b is applicable, if you can find this order's Shopify shipping method inside this "Shopify Delivery Speeds" mapping