Duplicate Transaction Reference

[Alade5673]

I keep getting this error of duplicate transaction reference anytime I want to put in my card details. Immediately my keyboard shows up to start typing, it redirects and shows this error

below is my code

`PayWithPayStack().now(
        context: context,
        secretKey: '$secretKey',
        customerEmail: "$email",
        reference: DateTime.now().microsecondsSinceEpoch.toString(),
        callbackUrl: "/",
        currency: "NGN",
        paymentChannel:["card", "bank", "ussd", "qr", "mobile_money", "bank_transfer", "eft"],
        amount: couponValid == false ? "${int.parse(widget.item['amount']) * 100}" : "${(final_amount * 100).toString()}",
        transactionCompleted: () {
          print("Transaction Successful");

          setState(() {
            payment_ref = DateTime.now().microsecondsSinceEpoch.toString();
          });

          loader().showLoaderDialog(context);
          subscribe();

        },
        transactionNotCompleted: () {
          print("Transaction Not Successful!");
        });`

[Alade5673]

@popekabu

[popekabu]

The reference you’re passing from your front end isn’t changing. Alternatively use a random string generator and see if it solves your issue

On Thu, 14 Dec 2023 at 8:26 PM, devlade @.***> wrote:

@popekabu https://github.com/popekabu

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[Alade5673]

@popekabu

It didn't work

even after using uuid

reference: "${DateTime.now().microsecondsSinceEpoch}_${Uuid().v4()}"

[popekabu]

That’s a strange behavior of the date time class. It’s beyond my control.

On Fri, 15 Dec 2023 at 7:00 AM, devlade @.***> wrote:

It didn't

I had to use uuid

reference: "${DateTime.now().microsecondsSinceEpoch}_${Uuid().v4()}"

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[popekabu]

@Alade5673 how about you try a static string and see if it works then change the static string again to see if it works. I dont really know where the issue is emanating from but I suspect the dateTime class is returning the same String and since that same string is a reference id already used in your paystack. Paystack denies it. I hope its not a windows issue.

Also you can try restarting your app or pc or debug the datetime string and see if the string is the same or changes from time to time.

I just tested it on mine, see video below. Keep me posted.

All the best!!

https://github.com/popekabu/pay_with_paystack/assets/26738997/23ea1195-bcd4-4681-853c-a11be929aa2d

[Alade5673]

@popekabu it only happens when you want to pay with card option. Once you want to put in your card details it throws that error

[Alade5673]

https://github.com/popekabu/pay_with_paystack/assets/39368095/16b81a69-1ba4-44bc-8462-151b5e140077

[Alade5673]

@popekabu please can you take a look at the last video I sent?

[Alade5673]

@popekabu

[popekabu]

Will do if I have the time. Thanks

On Sat, 16 Dec 2023 at 9:08 PM, devlade @.***> wrote:

@popekabu https://github.com/popekabu

— Reply to this email directly, view it on GitHub https://github.com/popekabu/pay_with_paystack/issues/16#issuecomment-1858930610, or unsubscribe https://github.com/notifications/unsubscribe-auth/AGMACNODS7DHCFO7A64DK6DYJYETBAVCNFSM6AAAAABAVIWTTSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQNJYHEZTANRRGA . You are receiving this because you were mentioned.Message ID: @.***>

[popekabu]

@Alade5673 I had a look at your video the day you posted it, Im not sure where the issue is from. Might be a paystack issue

[Alade5673]

alright no problem

thanks

[popekabu]

To be safe. Be sure you're using uuidv4 as your reference and not dateTime. Initialize it in the parameter directly. Please keep me posted on what happens from there.

Thanks

[popekabu]

try using uuid as a unique id generator. Get it from pub.dev