# Rate Change Notification
This operation enables the PMS to request RG Bridge to update OTAs with changes in rates. Here's a breakdown of the process:
1. **Triggering Rate Changes**: Rate changes in the PMS can occur through daily rate changes, creation of new rate plans, addition of new inventory to existing rate plans, or due to enabling a hotel for integration, rolling refresh, re-status, etc.
2. **Notification Messages**: In all these scenarios, the PMS should send notification messages for the products and date ranges affected using the `OTA_HotelRateAmountNotifRQ` message.
3. **Message Handling by RG Bridge**:
* RG Bridge will store the message before sending it to all managed channels.
* RG Bridge will send a success or failure message back to the PMS interface.
4. **Retry Mechanism**: In case of failures on the RG Bridge side, the PMS interface must retry the message transmission up to 5 times before marking the notification as a failure.
5. **Message Exchange**:
* **Request**: `OTA_HotelRateAmountNotifRQ`
* **Response**: `OTA_HotelRateAmountNotifRS`
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