To update the related products field in Magento using a custom flow ‘NetSuite Related Item to Magento Linked Product’, need to add a new import step in the flow.
STEPS
1.Create a new import
2.In the new import step, add the API Name, Operation, SKU as it is for updation.
3.Then the mapping is performed as shown below.
Then on running the flow and verifying the product in Magento we can see that the product is updated correctly.