Hello, I've been trying to load this lineInit function but unfortunately it's not firing on my Sandbox Account but it's firing on my production account. Is their a way I can log the reason why it's not firing ? Fairly simple it disable line item fields.

/**
* @NApiVersion 2.x
* @NScriptType ClientScript
*/


define(['N/record'],
    function (record) {
        function lineInit(context) {
            
                /** this will disable the amount for existing line */
                var rec = context.currentRecord;
                alert('This is the rec' + rec);
                var itemCount = rec.getLineCount('item');
                var sublistName = context.sublistId;
                var line = rec.getCurrentSublistIndex({ sublistId: sublistName });
                if (itemCount > line)
				{
					//Disable: Description, Price Level, Qty, Rate, Amount , Item Name, Commit, Item Number
                    var theField = rec.getSublistField({sublistId: "item",fieldId: 'item',line: line});
                    theField.isDisabled = true;
					var description_Field = rec.getSublistField({sublistId: "item",fieldId: 'description',line: line});
                    description_Field.isDisabled = true;
					var price_Field = rec.getSublistField({sublistId: "item",fieldId: 'price',line: line});
                    price_Field.isDisabled = true;
					var Qty_Field = rec.getSublistField({sublistId: "item",fieldId: 'quantity',line: line});
                    Qty_Field.isDisabled = true;
					var rate_Field = rec.getSublistField({sublistId: "item",fieldId: 'rate',line: line});
                    rate_Field.isDisabled = true;
					var amount_Field = rec.getSublistField({sublistId: "item",fieldId: 'amount',line: line});
                    amount_Field.isDisabled = true;
					var custcol1_Field = rec.getSublistField({sublistId: "item",fieldId: 'custcol1',line: line});
                    custcol1_Field.isDisabled = true;
					var commit_Field = rec.getSublistField({sublistId: "item",fieldId: 'commitinventory',line: line});
                    commit_Field.isDisabled = true;
                }


            
        }

        return {
            lineInit: lineInit,

        };
    });

Is there any difference in Script Deployment settings between the environments? Audience, Deployment Status, etc?

that's what I thought in the beginning but they are both apparently Identical.