If there is only one item in the grid, we prevent deletion of that item

[sindhu2]

At least one row should be there in GRN Item grid if it is the one line item in that grid we do not allow to delete it if we have more than 1 item allow to delete in power pages
Single Line Item:
If there is only one item in the grid, we prevent deletion of that item. It ensures that there is always at least one row present.
Multiple Items:
When there are multiple items, we allow deletion of any item from the grid.

[OliverRodrigues]

How can we help you with that requirement @sindhu2 ?

I would achieve that via JS personally

[GWham1]

I would probably tackle this via JS as well. I have not tested the below code, but something like this should give you a starting point.

$(document).ready(function () {
    $(".entitylist.entity-grid").on("loaded", function(){
        if ($(this).children(".view-grid").find("tr").length > 1) {
            // perform logic to hide buttons etc
        }
    });
});