how to fetch aal items from zoho books invoice line items

how to fetch aal items from zoho books invoice line items

I have done integration of zoho books with salesforce using zoho flow. And my requirement is that whenever i create an invoice in zoho books the same should get generated in salesforce and also the product object i have in salesforce where all items in the invoice should get created.
but i can not fetch all the items from line items in to salesforce product.
help regarding this