# Start tracking a package

Allows you to subscribe to tracking updates for a package. You specify the carrier_code and tracking_number of the package,
and receive notifications via webhooks whenever the shipping status changes.

Endpoint: POST /v1/tracking/start
Version: 1.1.202604070904
Security: api_key

## Query parameters:

  - `carrier_code` (string)
    A shipping carrier, such as fedex, dhl_express, stamps_com, etc.
    Example: "stamps_com"

  - `tracking_number` (string)
    The tracking number associated with a shipment
    Example: "9405511899223197428490"

  - `carrier_id` (string)
    Carrier ID
    Example: "se-28529731"

## Response 400 fields (application/json):

  - `request_id` (string, required)
    A UUID that uniquely identifies the request id.
This can be given to the support team to help debug non-trivial issues that may occur
    Example: "aa3d8e8e-462b-4476-9618-72db7f7b7009"

  - `errors` (array, required)
    The errors associated with the failed API call

  - `errors.error_source` (string, required)
    The source of the error, as indicated by the name this informs us if the API call failed because of the
carrier, the order source, or the ShipEngine API itself.
    Enum: "carrier", "order_source", "shipengine"

  - `errors.error_type` (string, required)
    The type of error
    Enum: "account_status", "business_rules", "validation", "security", "system", "integrations"

  - `errors.error_code` (string, required)
    The error code specified for the failed API Call
    Enum: "auto_fund_not_supported", "batch_cannot_be_modified", "carrier_conflict", "carrier_disconnected", "carrier_not_connected", "carrier_not_supported", "confirmation_not_supported", "default_warehouse_cannot_be_deleted", "field_conflict", "field_value_required", "forbidden", "identifier_conflict", "identifiers_must_match", "insufficient_funds", "invalid_address", "invalid_billing_plan", "invalid_field_value", "invalid_identifier", "invalid_status", "invalid_string_length", "label_images_not_supported", "meter_failure", "order_source_not_active", "rate_limit_exceeded", "refresh_not_supported", "request_body_required", "return_label_not_supported", "settings_not_supported", "subscription_inactive", "terms_not_accepted", "tracking_not_supported", "trial_expired", "unauthorized", "unknown", "unspecified", "verification_failure", "warehouse_conflict", "webhook_event_type_conflict", "customs_items_required", "incompatible_paired_labels", "invalid_charge_event", "invalid_object", "no_rates_returned", "file_not_found", "shipping_rule_not_found", "service_not_determined", "no_rates_returned", "funding_source_registration_in_progress", "insurance_failure", "funding_source_missing_configuration", "funding_source_error", "freight_connection_inactive", "freight_provider_id_required", "freight_provider_already_connected", "freight_shipment_not_found", "freight_tracking_not_available", "freight_tracking_not_found", "freight_shipment_not_batchable"

  - `errors.message` (string, required)
    An error message associated with the failed API call
    Example: "Body of request cannot be null."

  - `errors.carrier_id` (string)
    A string that uniquely identifies the carrier that generated the error.
    Example: "se-28529731"

  - `errors.carrier_code` (string)
    The name of the shipping carrier that generated the error, such as fedex, dhl_express, stamps_com, etc.
    Example: "dhl_express"

  - `errors.field_name` (string)
    The name of the field that caused the error
    Example: "shipment.ship_to.phone_number"