General API Process Flow
Scope of this API Document
Generally, when consuming City-Link web service methods with JSON input and JSON response data, the following happens in sequence:
1) Request access Token by providing Account Number, Meter Number, and company code supplied by City-link.
Access Token validity is seven (7) days.
> If Success, Store Access token for future request.
>If Fail, check on credential information or contact us for support.
2) Perform Shipment request / Tracking function by supplying credential and access token in request header.
Input data will be validated against parameter requirement stated in this document below.
> If input data is valid, response will be provided as per sample below.
> If input data is invalid, please check Return code and description.