USER EVENT TO SET BATCH NUMBER

This script is to set the custom field batch number with the value in after submit that is the batch number should be in the format as (ACCOUNTNUMBER_TRANDATE) 
/**
 * @NApiVersion 2.1
 * @NScriptType UserEventScript
 */
define(['N/record', 'N/search', 'N/runtime', 'N/format'], function(record, search, runtime, format) {

    function afterSubmit(context) {
        try{
        if (context.type !== context.UserEventType.CREATE) {
            return;  
        }

        var newRecord = context.newRecord;
        var paymentDate = newRecord.getValue({ fieldId: 'createddate' });
        log.debug('paymentDate',paymentDate);

        var formattedPaymentDate = format.format({
            value: paymentDate,
            type: format.Type.DATETIME
        });

        var thirtySecondsAgo = new Date(paymentDate.getTime() - 30000);

        var formattedThirtySecondsAgo = format.format({
            value: thirtySecondsAgo,
            type: format.Type.DATETIME
        });

        // Search for bill payments created within the last 30 seconds
        var billPaymentSearch = search.create({
            type: search.Type.VENDOR_PAYMENT,
            filters: [
                ['createddate', 'within', formattedThirtySecondsAgo, formattedPaymentDate]
            ],
            columns: ['internalid']
        });

        var searchResults = billPaymentSearch.run().getRange({
            start: 0,
            end: 1000 // Adjust the range as needed
        });

        // Generate a unique batch number
        var batchNumber = 'BATCH-' + new Date().getTime();

        // Update each bill payment with the generated batch number
        searchResults.forEach(function(result) {
            var paymentId = result.getValue({ name: 'internalid' });
            record.submitFields({
                type: record.Type.VENDOR_PAYMENT,
                id: paymentId,
                values: {
                    custbody_jj_batchnumber: batchNumber
                }
            });
        });

        log.debug('Batch Number Assigned', 'Batch Number: ' + batchNumber + ' has been assigned to ' + searchResults.length + ' bill payments.');
        }

catch(e){
    log.error('error@catch',e)
}
    }
    return {
        afterSubmit: afterSubmit
    };

});