Pop up with 'Enter amount' on expense sublist keeps popping up

Hi There

I have a client script running on a vendor bill.

If I try to save the record after placing it into edit mode, I get the following error:

I have not clicked into the sublist however.

This is the script

/**
 *@NApiVersion 2.x
 *@NScriptType ClientScript
 */
define(["N/record"], function (record) {
	/**
	 * @param {ClientScriptContext.fieldChanged} context
	 */
	function fieldChanged(context) {
		//the if condition ensures the field changed trigger does not execute on changes in sublist. setting this to
		//!context.sublistid ensures changes in department field and location field for the sublist do not trigger the script
		if (
			!context.sublistId &&
			(context.fieldId == "department" || context.fieldId == "location")
		) {
			log.debug("sublistId", context.sublistId)
			log.debug("fieldId", context.fieldId)

			var recordObj = context.currentRecord
			var departmentMain = recordObj.getValue({ fieldId: "department" })
			var locationMain = recordObj.getValue({ fieldId: "location" })
			var expenseSublist = recordObj.getSublist({ sublistId: "expense" })
			var expenseSublistLength = recordObj.getLineCount({
				sublistId: "expense",
			})
			log.debug("department", departmentMain)
			log.debug("location", locationMain)
			log.debug("expenseSublist.length", expenseSublistLength)
			for (var i = 0; i < expenseSublistLength; i++) {
				recordObj.selectLine({
					sublistId: "expense",
					line: i,
				})
				var departmentLine