Hsn code for purchased items

Can any one help me for HSN CODE related things.
From my business HSN CODE different from item to item,
now according Indian gst rule we need to mention HSN CODE compulsory, so how can i set HSN CODES for every items.

If you’re not using the code field, you can mention the hsn code there.

If you already have a coding system, you can mention it in the description.

To go even further, you can create a custom field for inventory items and call it hsn and check the box that says show on printed documents.

You can check this guide for more detail.
https://www.manager.io/guides/8941

You should read the Guide: https://www.manager.io/guides/10388.

In this case we need to enter different hsn codes for different items in a single invoice.

Why would you do that? Enter them in the inventory item once and you will never have to enter them again.

correct. Once u mentioned hsn code in inventory custom field then it automatically print the hsn code while generating receipts and invoices.