Dynamic pre-request script Postman - postman

Question

I have this pre-request script and using runner to send bulk requests each second
const moment = require('moment');
postman.setEnvironmentVariable("requestid", moment().format("0223YYYYMMDDHHmmss000000"));
I need the “requestid” to be unique every time.
first request: "022320221115102036000001"
second request: "022320221115102037000002"
third request: "022320221115102038000003"
.
.
.
and so on until let’s say 1000 requests.
Basically, I need to make the last 6 digits dynamic.

Answer 1

Your answer can be found on this postman request I've created for you. There's many ways to achieve this, given the little information provided, I've defaulted to:
Set a baseline prefix (before the last 6 numbers)
Give a start number for the last 6 numbers
If there IS NOT a previous variable stored initialized with the values above
If there IS a previous variable stored just increment it by one.
The variable date is your final result, current is just the increment
You can see here sequential requests:
And here is the code, but I would test this directly on the request I've provided above:
// The initial 6 number to start with
// A number starting with 9xxxxxx will be easier for String/Number converstions
const BASELINE = '900000'
const PREFIX = '022320221115102036'
// The previous used value if any
let current = pm.collectionVariables.get('current')
// If there's a previous number increment that, otherwise use the baseline
if (isNaN(current)) {
current = BASELINE
} else {
current = Number(current) + 1
}
const date = PREFIX + current
// Final number you want to use
pm.collectionVariables.set('current', current)
pm.collectionVariables.set('date', PREFIX + date)
console.log(current)
console.log(date)