Automation not triggering for bulk Razorpay payments (High-volume scenario)

Status: Open · Asked by Neel Nitin Vora on Dec 17, 2025 · 0 views

Neel Vora — Question · Dec 17, 2025

Hello Pabbly Team,

I’m facing a critical issue with my automation during high-volume payment scenarios, and I’d like your guidance on this.

Workflow setup:

Trigger: Razorpay – Payment Successful
Action: Send automated WhatsApp message via WATI
Entire automation is handled through Pabbly Connect

Issue observed:
After my live webinar, I send a Razorpay payment link to attendees.
At that time, many participants make payments almost simultaneously (within seconds).

However, I’ve noticed that:

The automation does not trigger for all successful payments
Several paid users do not receive the automated WhatsApp message
Razorpay shows the payment as successful, but the Pabbly workflow is not triggered for some transactions

This issue mostly happens only when multiple payments occur at the same time, not during normal low-volume payments.

My concern / question:

Is there any rate-limit, queue delay, or webhook drop in Pabbly when many Razorpay events fire at the same time?
Does Pabbly process Razorpay webhooks sequentially or in batches?
Is there a recommended buffer, delay, or retry mechanism for high-frequency payment events?
Any best-practice setup for webinar-based bulk payments?

This is impacting paid users’ onboarding, so I want to ensure no successful payment misses automation execution.

Looking forward to your technical insights and solution suggestions.

Thank you,
Neel Vora

Preeti Paryani — Reply · Dec 17, 2025

Hello @Neel Vora,

Thank you for reaching out and sharing the detailed scenario.

The Razorpay trigger you are using is a webhook-based trigger, which means the workflow is triggered only when Razorpay sends the webhook event for a successful payment.

A few important points to clarify:

Pabbly Connect can process up to 400 webhook requests per minute. If more than 400 webhook events are received within a single minute, any requests beyond this limit may not get captured - https://forum.pabbly.com/threads/pabbly-connect-constraints-rate-limits.10670/.
However, based on your description, this may not necessarily be the case.

To investigate this further, we request you to please share:

Details of specific users/payments who completed payment in Razorpay but did not receive the WhatsApp message (e.g., payment ID, email, phone number, or timestamp).
Additionally, please check your WATI message logs/history to confirm whether any message failures or errors were recorded at the time of sending.

Once we have these details, we can review the task history and webhook logs more precisely and guide you accordingly.

Looking forward to your update.

Neel Vora — Reply · Dec 17, 2025

Here are three examples of the many who have note received the automated message even after Razorpay captured their payment at the right time but the automation did not get triggered and the payee had to message us:

[TABLE]
[TR]
[TH]Payment ID[/TH]

[TH]Bank RRN[/TH]

[TH]Customer detail[/TH]

[TH]Created on[/TH]

[TH]Amount[/TH]

[TH]Status[/TH]

[TH]Actions[/TH]
[/TR]
[TR]
[TD]pay_RsM3MEeLEPScPW
[/TD]

[TD]052420733187
UPI[/TD]

[TD]+91 9673 575371
[email hidden][/TD]

[TD][/TD]

[TD]
[/TD]
[/TR]
[/TABLE]

[TABLE]
[TR]
[TH]Payment ID[/TH]

[TH]Bank RRN[/TH]

[TH]Customer detail[/TH]

[TH]Created on[/TH]

[TH]Amount[/TH]

[TH]Status[/TH]

[TH]Actions[/TH]
[/TR]
[TR]
[TD]pay_RsM3niGzwsc7aj
[/TD]

[TD]535084269947
UPI[/TD]

[TD]+91 9552 733143
[email hidden][/TD]

[TD][/TD]

[TD][/TD]
[/TR]
[/TABLE]

[TABLE]
[TR]
[TD][/TD]

[TH]Payment ID[/TH]

[TH]Bank RRN[/TH]

[TH]Customer detail[/TH]

[TH]Created on[/TH]

[TH]Amount[/TH]

[TH]Status[/TH]

[TH]Actions[/TH]
[/TR]
[TR]
[TD]pay_RrxjjzlCMne9uv
[/TD]

[TD]534956437765
UPI[/TD]

[TD]+91 9850 850347
[email hidden]

[/TD]

[TD][/TD]

[TD][/TD]
[/TR]
[/TABLE]

Also, no errors were recorded in Wati message history

Please assist at the earliest as this is a major concern for me.

Preeti Paryani — Reply · Dec 18, 2025

Hello @Neel Vora,

Upon checking the task history, we found two records from the three you have shared. both users didn't received the messages as the WhatsApp numbers seem to be invalid.

Task History ID - IjU3NjUwNTY1MDYzNzA0MzM1MjZmNTUzMTUxMzc1MTY0NTQzNzBmMzQi_pc

[TABLE]
[TR]
[TH]Payment ID[/TH]
[TH]Bank RRN[/TH]
[TH]Customer detail[/TH]
[TH]Created on[/TH]
[TH]Amount[/TH]
[TH]Status[/TH]
[TH]Actions[/TH]
[/TR]
[TR]
[TD]pay_RsM3MEeLEPScPW[/TD]
[TD]052420733187
UPI[/TD]
[TD]+91 9673 575371
[EMAIL][email hidden][/EMAIL]
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[/TABLE]

Task History ID - IjU3NjUwNTY1MDYzNzA0MzM1MjZmNTUzMTUxMzQ1MTYyNTQzNjBmMzYi_pc

[TABLE]
[TR]
[TH]Payment ID[/TH]
[TH]Bank RRN[/TH]
[TH]Customer detail[/TH]
[TH]Created on[/TH]
[TH]Amount[/TH]
[TH]Status[/TH]
[TH]Actions[/TH]
[/TR]
[TR]
[TD]pay_RsM3niGzwsc7aj[/TD]
[TD]535084269947
UPI[/TD]
[TD]+91 9552 733143
[EMAIL][email hidden][/EMAIL][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[/TABLE]

Not found in task history, kindly reach out to the Razorpay team to confirm if they have sent this to the webhook or not.

[TABLE]
[TR]
[TH]Payment ID[/TH]
[TH]Bank RRN[/TH]
[TH]Customer detail[/TH]
[TH]Created on[/TH]
[TH]Amount[/TH]
[TH]Status[/TH]
[TH]Actions[/TH]
[/TR]
[TR]
[TD]pay_RrxjjzlCMne9uv[/TD]
[TD]534956437765
UPI[/TD]
[TD]+91 9850 850347
[EMAIL][email hidden][/EMAIL][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[/TABLE]

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