Customer Benefits:

• Improve recipient confidence with proactive notifications for in-transit changes to Estimated Delivery Date and day of delivery Time Window.
• Reduce customer service costs for WISMO (Where Is My Order) calls as well as delivery disputes by providing FedEx Picture Proof of Delivery.
• Enhance customer experience by providing near real time notifications on shipment status.
• Gain operational efficiencies by receiving real time push update on shipments, instead of polling continuously to check for track updates on every shipment.

Tracking Events

This feature allows to track the status of shipments proactively notify customers on different updates in the shipment lifecycle. It provides the customers with options to choose the exact stage of the shipment process/events they wish to receive a notification/alert for. The available shipping events are:

• Ship: This option provides notification when the selected shipment event occurs. Example: Label Created, Pickup, etc.
• In transit: This option provides notification for the shipment transit events. Example: In transit, item held at delivery office, etc.
• Delivery: This option provides notification for the shipment delivery events. Example: out for delivery, delivered, etc.
• Exceptions: This option provides notification for the delivery exceptions. Example: clearance delay, etc.
• Convenient delivery options: Select this option to receive notification for some personalized tracking events. Example: hold at location request accepted.

For more information on the available shipment event options, refer to the Status Codes and Statuses for Webhook Tracking Events table.

Proof of Delivery

This feature is used to acknowledge an order has successfully arrived at its intended destination. This includes:

• Picture proof of delivery (PPOD): PPOD allows customers to receive a picture of the exact location of their package once it is delivered to their doorstep.
  Webhooks delivers the PPOD images in the JSON payload in a base64 format. The images can then be converted to a JPEG format.
  
  Note:

  • PPOD is available in the U.S., Canada, Puerto Rico, Hong Kong, New Zealand, United Kingdom, and Ireland.
  • PPOD is only available for FedEx Ground, FedEx Express and residential packages/address(es).
  • PPOD is available for eligible deliveries when SPOD is not required. PPOD and SPOD are not available together.
  • PPOD is available for on-signature required (NSR) deliveries that are not given directly to a customer (e.g. handed directly to a customer during delivery).
  • PPOD supports image size from 14000 to 33000 bytes (Applicable for 320 x 240 resolution image).
• Signature proof of delivery (SPOD): SPOD allows customers to receive an image of the recipient’s signature as well as their name delivery date, time and location. The SPOD information will be presented as a byte array instead of an image. The byte array is a base64 encoded string, which should be decoded to get the final signature image in PNG format
Note:
• SPOD is not available for Tracking Number based Webhook.
• The SPOD image size will be from 4000 to 6000 bytes (Applicable for 400x95 resolution image).
• The SPOD image size will be from 5000 to 8000 bytes (Applicable for 230x150 resolution image).

To learn more about certain use cases for the SPOD and PPOD with the corresponding tracking events, refer to the SPOD and PPOD use cases

• GPS proof of delivery (GPSPOD):
  • GPS POD allows customers to receive the geographical coordinates of the delivery location.

Estimated Delivery Date and Delivery Time Window Events

This feature helps recipients of the shipments plan their schedules by providing a date and/or time range for shipment deliveries. This includes:

• Estimated delivery date (EDD): This option provides an estimated date of delivery of the shipment to the recipient. Example: Nov, 20, 20XX.
• Estimated delivery time window (EDTW): This option provides the recipient with an estimated time window for the shipment delivery on the day of actual delivery. Example: 2pm to 6pm.
• Standard transit: The standard committed window of time by which the package is expected to be delivered.

Event Based Filtering

This feature allows customers to organize their webhook projects based on the billing methods for the shipments. The options are:

• Inbound: select this option for shipments that will be delivered to you and will be paid for, by you as the recipient.
• Outbound: select this option for shipments that will be shipped by you and will be paid for, by you as the sender.
• Third-party: select this option for inbound and outbound shipments that are billed to you as a third-party payer.

Retry Policy

This feature prevents FedEx from sending tracking event data in the event of a client-side issue. FedEx will hold the data and attempt to resend it within a span of 6 hours.

if FedEx does not receive a successful response in the defined time span, then FedEx will stop redelivery of that specific event.

For more information on retry policies, refer to the Retry/Redelivery mechanism section.

• One shipping account number cannot be used in multiple webhooks.
• The destination URL/endpoint created by the customer must:
  
  • Be of HTTPs host.
    
  • Respond to POST requests and parse JSON payloads.
    
• Webhook Security: Only HTTPS connections using TLS (SSL) 1.2 or higher protocol versions that is configured with a certificate from a valid certificate authority (CA) is supported. Whitelist the below IP addresses to receive updates from FedEx servers without any interruptions:
  

  Dev/Beta	Prod
  169.63.102.107	150.239.111.98
  169.59.163.56	169.63.176.128
  150.239.215.211	150.239.210.140

• Customers may sometimes receive the tracking event updates out of order and must look at the scan event time stamp for the correct order.
• Deleting Account(s) in FedEx Developer Portal:
  • User/Customer cannot delete the account(s):
    1. If it is associated with any webhook.
       
       Note: Any webhook includes all active and paused Webhook.
    2. If the account is available or associated with a project, and
    3. If it is the only account in a project/webhook.
       
       Note: User/Customer needs to remove the account from the project/webhook first and then delete it from the organization.
  • User/customer can delete the account(s):
    1. The account must belong to the same organization.
    2. User/Customer must be an admin to delete accounts from the organization.

Common Constraints

• All customer shipments associated with the FedEx 9-digit account numbers of operating companies- FedEx Express®, FedEx Ground® and FedEx Ground® Economy (formerly known as FedEx SmartPost®) are in scope irrespective of destination or origin (inbound, outbound, international, domestic, etc.).
• Webhook only supports 9-digit enterprise/parcel enabled accounts. Enterprise accounts enable the creation of shipments associated with all FedEx operating companies including FedEx Express and FedEx Ground.


Note:9-digit LTL freight only accounts are not supported, if you want to add LTL freight account, then you must reach out to customer support to port an LTL to enterprise account.
• FedEx Office, FedEx Cargo, FedEx Custom Critical® operating companies are out of scope.
• Customers must manage the order of the shipment tracking events received on their end.
• Automated email notifications are sent whenever there is any activity (Saved/Failed/Create/Update/Pause/Resume/Cancel/Delete) on the subscribed Shipment Visibility Webhooks.
• Translations:
  • Tracking payload translations are supported in 41 languages (locales).
    Click here to view the list of supported languages.
  • Email notification translations is available for languages supported by U.S. regions only. (Locale: en-US, es-US)

FedEx Developer Portal User roles:

Within the FedEx Developer Portal, you can perform specific functions based on the configured role.
To learn more about FedEx Developer Portal, refer to the Organization Administration Guide.

You can use the Test Webhook URL feature to test the type of tracking data returned to the Destination URL (receiver/listener server). This helps to validate the URL and data returned prior to creating a Webhook.

Navigation:

Following are the ways to navigate to Test Webhook URL Sandbox Console:

• My Projects (on the left Navigation Panel) -> Webhooks tab -> Test Webhook URL button->in Sandbox Console, click on Try this Webhook
• API Catalog (on the left Navigation Panel) -> search for Webhook/click on WEBHOOK in FILTERS -> Shipment Visibility Webhook card:
  1. -> Overview -> Documentation button -> in Sandbox Console, click on Try this Webhook.
  2. -> Docs -> in Sandbox Console, click on Try this Webhook.

Steps:

Following are the steps to use Test Webhook URL functionality:

1. Click on Test Webhook URL button.
2. Enter the following Test parameters:

   Field Name	Description
   Destination URL	This is the URL to receive the Tracking event data/payload. Customer should provide a working and valid destination URL. Destination URL provided must be in the standardized syntactical format (secure https URL).
   Security Token	Used as shared secret to authenticate and validate Shipment Visibility Webhook response. Token value must be between minimum length of 25 characters and maximum of 100 characters. At least 1 uppercase, 1 lowercase and 1 numeric character are required. Security Token will be used to create Hash-based Message Authentication Code (HMAC) signature for response validation.
   Payload language	Select the preferred language for tracking data translation from the drop-down list. Following are the available 6 sample languages: English (United States) French (Canada) Chinese (China) German (Germany) Japanese (Japan) Spanish (Mexico)
   Tracking Type	Select type of response in which tracking data needs to be received. Detailed Tracking Response (Response type consists of secured tracking data with entire history of events). Event-Specific Tracking Response (Response type consists of secured tracking data with only the most recent event information).
   Tracking events	Select one higher-level category to receive email notifications related to shipment events in the package lifecycle. Following are the higher-level categories: Ship In Transit Delivery Exceptions Proof of Delivery Estimated Delivery
   Status Event	A tracking event in the packages’ lifecycle. Select one of the tracking events to be received. Following are the available 10 sample status events: Shipment information sent to FedEx (Label Created) Picked up In transit Item Held at Delivery Office Out for delivery Delivered Picture Proof of Delivery Signature Proof of Delivery (Applicable only for Account Number based webhooks) Estimated Delivery Date (EDD) Estimated Delivery Time Window (EDTW)

    

   Note: “Status Event” field values will be populated based on the selected "Tracking Event Category”. Refer the following table to learn more about the “Tracking Event Category” and their respective “Status Events”.
   
   

    

   Status Event Category	Status Event
   Ship	Shipment information sent to FedEx (Label Created) Picked up
   In-Transit	In transit Item held at delivery office
   Delivery	Out for delivery Delivered
   Proof of Delivery	Picture Proof of Delivery Signature Proof of Delivery (Applicable only for Account Number based webhooks)
   Estimated Delivery	Estimated Delivery Date (EDD) Estimated Delivery Time Window (EDTW)

    

3. Check the FedEx Developer Portal License Agreement (FDPLA) box to Sign/Accept the License Agreement.
4. Click the PUSH button to view test results.

Response :

Following are the response parameters in the Sandbox:

• Body – The body contains the response parameters in the Test Webhook URL tab within Sandbox Console.
• Status – This section in Test Results tab provides you the status of the request that is processed.

Sample Success Message:
Success
Test Webhook tracking event details delivered successfully.

If test event delivery fails, the STATUS will be displayed as Error in Test Results tab with respective error code and error message.

Sample Error Message:
Error Code:<<error code>>
Test Webhook tracking event details delivery failed.

Validation Rules:

• Webhook URL must be in Standardized Syntactical format.
• All the required fields for testing a Webhook URL must not be empty.
• For Successful Validation:
  • FedEx will send a request with sample event JSON.
  • Webhook destination URL should respond with 200 (OK) as HTTP status code to FedEx.
• For Unsuccessful/Failed Validation:
  • If FedEx receives any response other than 200 (OK), then the validation of the Webhook destination URL will be considered as failed.
  • FedEx will display the error code and error message in Test Results tab

What is a MAC/HMAC and how is it used in the validation process?

FedEx uses HMAC to validate your URL whenever you are creating, editing, or resuming any Shipment Visibility Webhook project.

A message authentication code (MAC) provides a way to check the integrity of information transmitted over or stored in an unreliable medium, based on a secret key. Typically, MACs are used between two parties that share a secret key to validate information transmitted between the two parties.

A MAC mechanism that is based on cryptographic hash functions is referred to as HMAC. HMAC can be used with any cryptographic hash function, e.g., SHA256, in combination with a secret shared key. HMAC is specified in RFC 2104. FedEx Shipment Visibility Webhook will use HMAC SHA256.

Validation Rules:

• Webhook Name should be unique.
• Webhooks Destination URL must be in Standardized Syntactical format.
• All the required fields for creating a Webhook must not be empty.
• At least one available FedEx shipping account number should be associated for creating a Webhook.
• For Successful validation:
  • When a Webhook is created successfully, customer will receive a confirmation message.

    Sample Confirmation Message: <<Webhook name>> successfully created. Changes may take up to 10 minutes to go into effect.

• For Unsuccessful/Failed validation:
  • If FedEx receives any response other than 200 (OK) or 202 (Accepted), then the validation of the Webhook destination URL will be considered as failed.

The management console is available on the FDP for managing the Shipment Visibility Webhooks. The console provides you with the options to edit, delete, pause, and resume the active/paused Webhooks as required.

Navigation:

Following is the way to navigate to MANAGE WEBHOOKS (Webhooks Management Console) page:

• My Projects (on the left Navigation Panel) -> Webhooks tab -> MANAGE WEBHOOKS page

Common Limitations:

• Customer must always provide a secure https destination URL in standardized syntactical format and be validated as a working event receiver.
• FedEx will push Tacking Event data to customer’s destination URL in a standardized JSON format in the selected language (locale).
• Unique Fields that cannot be repeated in multiple Webhooks: Webhook Name, Webhook Id and FedEx shipping account number.
• Any changes (SAVED/CREATED/EDITED/RESUBMIT/PAUSED/RESUMED) made to a Webhook could take up to 10 minutes to get into effect.
• ACTIVE Webhook(s) will stay active indefinitely unless:
  • The webhook is PAUSED or CANCELLED.
  • If the customer requests aligned Technical Consultant to pause the Webhook(s).
• View details option is available only for ACTIVE and PAUSED webhooks.
• FAILED and PAUSED Webhook(s) will be available in Webhook Management Console for 30 days only.
  • If no action (EDIT/RESUME/DELETE) is taken within 30 days, the paused Webhook(s) will get automatically cancelled.
  • If no action (EDIT and RESUBMIT/DELETE) is taken within 30 days, the failed Webhook(s) will get automatically deleted.
• Any saved for later webhooks will be shown as IN-PROGRESS in Webhook Management Console for 90 days only.
  • If no actions (continue creating or delete) is taken within 90 days, the in-progress Webhook(s) will get automatically deleted.

Edit Webhook

You can use this option to add, update or remove information/details in field(s) of an existing Webhook.

Steps:

Follow below steps for Editing a Webhook:

1. Select My Projects on the left Navigation Panel.
2. Select Webhooks tab.
3. Select Individual Webhook listed under My Webhooks.
4. Select Edit action from the kebab menu (⋮) on the respective Shipment Visibility Webhook.
5. On the Configure Webhook page:
   1. Check the default billing account number displayed for your organization. If you want to change the billing account number, click on ADD BILLING ACCOUNT TO YOUR ORGANIZATION (if you have a single billing account) or SELECT ANOTHER BILLING ACCOUNT (this option is displayed if you have multiple billing accounts under your organization).
   2. Select the features you need and click on Next.
      
      Note: To learn more about the features, click on the help icon (?) next to the feature.
6. On the Enter Details page, select the field(s) you would like to edit and select Next.
7. On the Choose shipping accounts page, add or remove the accounts associated with the webhook and select Next.
8. On the Confirm details page, check the changes made in the webhook project and select Next to confirm.

The successful request submission will update the Webhook, and it will remain in ACTIVE status.

Validation Rules:

• When the changes are updated successfully, you should receive a confirmation message.

  Sample Confirmation Message: <<Webhook name>> is successfully updated. Changes may take up to 10 minutes to go into effect.

• The unsuccessful/failed Validation:
  • Validation to the destination URL is considered as failed if, FedEx receives responses other than 200 (OK) or 202 (Accepted).

View Webhook Details

You can use this option to view details/configurations of an existing Shipment Visibility webhook.

Steps:

Follow below steps to view a Webhook:

1. Select My Projects on the left Navigation Panel.
2. Select Webhooks tab.
3. Select Individual Webhook listed under My Webhooks.
4. Select View Details action from the kebab menu (⋮) on the respective Shipment Visibility Webhook.

Below table represents the view details page for the selected subscription type.

Pause Webhook

You can use this option to pause a webhook if you do not wish to receive tracking data temporarily.

Steps:

Follow below steps for pausing a Webhook:

1. Select My Projects on the left Navigation Panel.
2. Select Webhooks tab.
3. Select Individual Webhook listed under My Webhooks.
4. Select Pause action from the kebab menu (⋮) on the respective Webhook.
5. Enter the reason for pausing the webhook in the REASON FOR PAUSE textbox.
6. Click PAUSE to submit the request.

Response:

• When a Webhook is paused successfully, you will receive a confirmation message.

  Sample Confirmation Message:

  <<Webhook Name>> is successfully paused. FedEx will stop pushing shipments event data from hereafter. Changes may take up to 10 minutes to go into effect.

• When a Webhook fails to pause, you will receive respective error code and an error message.

  Sample Error Message: We are unable to process your request at the moment. Please try again later.

  Error Code: <<error code>>

Limitations:

• All paused Webhook(s) will be available in the “Webhooks” Management Console for 30 days only.
• If no action (EDIT/RESUME/CANCEL) is taken within 30 days, the paused Webhook(s) will be automatically deleted.

Resume Webhook

You can use this option if a Webhook needs to be resumed or made Active again.

Steps:

Follow below steps for Resuming a Webhook:

1. Select “My Projects” on the left Navigation Panel.
2. Select “Webhooks” tab
3. Select Individual Webhook listed under My Webhooks.
4. Select Resume action from the kebab menu (⋮) on the respective paused Webhook.
5. Enter the reason for resuming the webhook in the REASON FOR RESUME textbox.
6. Click RESUME to submit the request.

Validation:

• Webhook Name should be unique.
• Webhooks URL must be in Standardized Syntactical format.
• All the Webhook required fields must not be empty.
• At least one available account number should remain selected for resuming a Webhook.
• Successful Validation:
  • When the Webhook is resumed successfully, customer will receive a confirmation message.

    Sample Confirmation Message:

    <<Webhook Name>> is successfully resumed. FedEx will start pushing shipment event data from hereafter. Changes may take up to 10 minutes to go into effect.
• Unsuccessful/Failed validation:
  • If FedEx receives any other response other than 200 (OK) or 202 (Accepted), then the validation of the Webhook destination URL will be considered as failed.
  • Customer will receive an error code and error message.

    Sample Error Message: We are unable to process your request at the moment. Please try again later.

    Error Code: <<error code>>

Delete Webhook

If a saved or failed Webhook is no longer needed, use this option to delete it.

Steps:

Follow below steps for Deleting a Webhook:

1. Select My Projects on the left Navigation Panel.
2. Select Webhooks tab.
3. Select Individual Webhook listed under My Webhooks.
4. Select Delete action from the kebab menu (⋮) on the respective Webhook.
5. You can delete the Webhook in the Edit screen using DELETE button.

Response:

• When a Webhook is deleted successfully, you will receive a confirmation message.

  Sample Confirmation Message: <<Webhook Name>> is successfully deleted. 

• When a Webhook is not deleted successfully, you will receive an error message.

  Sample Error Message: We are unable to process your request at the moment. Please try again later.

  Error Code: <<error code>>

Cancel Webhook

If an active or paused Webhook is no longer needed, use this option to cancel it.

Steps:

Follow below steps for cancelling a Webhook:

1. Select My Projects on the left Navigation Panel.
2. Select Webhooks tab.
3. Select Individual Webhook listed under My Webhooks.
4. Select CANCEL action from the kebab menu (⋮) on the respective Webhook.
5. You can cancel the Webhook in the Edit screen using CANCEL button.

Response:

• When a Webhook is cancelled successfully, you will receive a confirmation message.

  Sample Confirmation Message: <<Webhook Name>> is successfully cancelled. 

• When a Webhook is not cancelled successfully, you will receive an error message.

  Sample Error Message: We are unable to process your request at the moment. Please try again later.

  Error Code: <<error code>>

Searching Webhook

You can search Webhooks based on Webhook Name, Destination URL, Webhook ID and Account Number.

Sorting Webhook

You can sort the Webhooks in ascending or descending order based on Webhook Name, Last Modified (date) and Status columns for better visibility.

Filtering Webhook

• You can filter webhooks based on the single status (Active/Paused/Processing/Failed) or multiple statuses selection of the webhook.
• You can clear the filter selection by clicking on "CLEAR ALL" button.

Processing Webhook

•  When a webhook create or edit request(s) takes more than 6 seconds then the status will be set to "PROCESSING".
• ·Webhook(s) in "PROCESSING" status are in disabled state. In this state you cannot perform any action.
• ·When a webhook status is set to "PROCESSING", the following message is displayed: "Your request for [Webhook project name] is still in progress, check back to see when it is complete."

Failed Webhook

• When a webhook create request(s) in “PROCESSING” status fails to create then the status will be set to "FAILED".
• When a webhook(s) is in "FAILED" status, you can perform only below two actions:
  • Edit and Resubmit
    Using this action, you can edit & submit the failed subscription (either you can submit the request as it is or can edit the details and submit the request again).
  • Delete
    Using this action, you can delete the existing failed webhook.

Limitations

• FAILED Webhook(s) will be available in Webhook Management Console for 30 days only.
• If no action (EDIT and RESUBMIT/DELETE) is taken within 30 days, the failed Webhook(s) will get automatically deleted.

DISABLE:

• If you want to disable the Shipment Visibility Webhook Capability temporarily or permanently, you can contact your aligned FedEx Technical Consultant and raise a request to disable the Shipment Visibility Webhook capability.
• After having Shipment Visibility Webhook capability disabled, you will not be able to access and view any functionalities and documentation related to Shipment Visibility Webhooks on the FDP.

RE-ENABLE:

Within 30 days:

• If you want to enable the Shipment Visibility Webhook Capability within 30 days, you need to contact your aligned Technical Consultant and raise a request to re-enable the Webhook Capability.
• After having Shipment Visibility Webhook capability re-enabled, you will re-gain access to all functionalities and documentation related to Shipment Visibility Webhooks in the FDP.
• By default, all the associated Webhooks under the organization will be in “PAUSED” status. You will need to manually change the status of one by one to “ACTIVE” to start receiving track event updates.
• If no action is taken within 30 days for PAUSED, FAILED, or SAVED shipment visibility webhooks, then the paused webhook(s) will get automatically cancelled, and the failed or saved webhook(s) will get automatically deleted.

After 30 days:

• If you want to enable the Shipment Visibility Webhook Capability after 30 days, you need to contact your aligned Technical Consultant and raise a request to re-enable the Webhook Capability.
• After having Shipment Visibility Webhook Capability re-enabled, you will re-gain access to all functionalities and documentation related to Shipment Visibility Webhooks in the FDP.
• By default, all the associated Webhooks under the organization are deleted permanently. It’s like Webhook capability is enabled for first-time user, you can go ahead and start creating now.

You will need to monitor the failures on your end internally and notify your aligned Technical Consultant if failures persist.

Retry limitations:

• Retry/Redelivery Mechanism (retry to push event data) occurs only when FedEx does not receive 200 or 202 HTTP status code in response from the destination URL. These retry/redelivery attempts are made over a span of 6 hours.
• Each time FedEx tries to deliver the event data and receives anything other than 200 or 202, then that transaction will be considered a failure.
• FedEx will continue to push new event(s) data if they happen while retrying for the original event and any subsequent events happening thereafter for that Webhook.

Retry/Redelivery logic:

A total of four redelivery attempts to deliver a shipment event notification will be attempted over a span of six hours from the occurrence of the first retry attempt of the event.

• Retry logic:
  • Attempt 1:
    Example: Tracking number 823497234824 is 'Delivered', WMT sent 400 response. (Anything other than HTTP status 200/202 is considered failure). In this case, we call attempt 1 as failure.
    • Attempt 2 - 1min +/ jitter - Retry 1
    • Attempt 3 - 2min +/ jitter - Retry 2
    • Attempt 4 - 4min +/ jitter - Retry 3
    Note: Retry Attempts 2, 3 and 4 are eligible for every failed redelivery attempt.

    If FedEx receives a successful response like an HTTP status 200 & 202 for any of the retry requests, then FedEx will stop the retry mechanism for a given event.

• Redelivery attempts:
  • Redelivery attempt 1: Occurs after 30 mins of attempt 1. If it fails, then 3 retries will be attempted. If retry attempts also fail, then mechanism moves to redelivery attempt 2.
  • Redelivery attempt 2: Occurs after 60 mins of attempt 1. If it fails, then 3 retries will be attempted. If retry attempts also fail, then mechanism moves to redelivery attempt 3.
  • Redelivery attempt 3: Occurs after 3 hours of attempt 1. If it fails, then 3 retries will be attempted. If retry attempts also fail, then mechanism moves to redelivery attempt 4.
  • Redelivery attempt 4: Occurs after 6 hours of attempt 1. If it fails, then 3 retries will be attempted. If retry attempts also fail, then the event is considered as missed event.

Important Points to Note:

• Retry Mechanism (retry to push event data) occurs only when FedEx does not receive 200 or 202 HTTP status code in response from the destination URL.
• Each time FedEx tries to deliver the event data and receives anything other than 200 or 202, then that transaction will be considered a failure.
• FedEx will continue to push new event(s) data if they happen while retrying for the original event.
• FedEx will also push for subsequent events happening thereafter for that Webhook.

Automatic Pausing (Disable Logic)

If the total number of unsuccessful redelivery attempts have exceeded the defined retry queue limit, then the respective webhook will be paused. FedEx will send an email to inform you that the webhook has been paused due to multiple unsuccessful attempts and that you should check your destination URL.

The total number of unsuccessful attempts permitted in a retry queue is 100,000. If the number of unsuccessful attempts exceeds this limit, then the respective webhook will be paused and an email notification will be sent to the webhook subscribers to inform the same and that they should check their network/server connectivity.

The below flowchart depicts the autopause logic: