# WhatsApp Flows response-decryption-error - How to Fix 
Author: Prashant Jangid
Author URL: https://www.heltar.com/blogs/author/prashant-jangid
Published: 2025-03-17
Category: Troubleshoot
Category URL: https://www.heltar.com/blogs/category/troubleshoot
Tags: WhatsApp Flows Error
Tag URLs: WhatsApp Flows Error (https://www.heltar.com/blogs/tag/whatsapp-flows-error)
URL: https://www.heltar.com/blogs/whatsapp-flows-response-decryption-error-how-to-fix-cm8d4jqaa008jtbw98ds5k5pp

The **response-decryption-error** occurs when the client fails to decrypt the payload sent by the business. This issue prevents proper processing of API responses and can disrupt message flows.

## What Causes response-decryption-error?

This error typically happens due to:

1. **Mismatched Encryption Key –** The encryption key used for payloads does not match the key uploaded for the phone number.

2. **Incorrect Key Configuration –** The correct key is not set up or linked properly.

3. **WhatsApp Server Issues –** Temporary problems on WhatsApp’s side may affect decryption.


## How to Fix the response-decryption-error

Follow these steps to resolve the issue:

### 1\. Verify the Encryption Key

Ensure that the same encryption key is used to encrypt endpoint payloads and is also uploaded for the phone number. Check the [Meta Business Manager](https://www.heltar.com/blogs/how-to-access-whatsapp-manager-on-meta-business-manager-cm58dt4sr001sx9tqqhi8rmgo) to confirm the correct key is in use.

### 2\. Re-upload the Encryption Key

- If the key appears incorrect or outdated, re-upload the correct key in the WhatsApp Business settings.

- Ensure the key is properly linked to the phone number associated with your business account.


### 3\. Debug and Retry

- Check API logs for additional error details.

- Wait a few minutes and retry the request.


### 4\. Contact WhatsApp Support

- If the issue persists, reach out to WhatsApp Business Support.

- Provide details such as error logs, phone number, and API request payloads to expedite troubleshooting.


By following these steps, you can fix the response-decryption-error and ensure smooth communication between your business and WhatsApp API. For more troubleshooting tips related to WhatsApp API, check out [heltar.com/blogs](http://heltar.com/blogs).


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