Add “Webservices” users

A Webservices user account allows us to authenticate your requests to Trust Payments. Using MyST, follow these steps to create a “Webservices” user for your account:

  New users can only be added by users with “Site admin” role.

  1. Sign in to MyST using your provided username & password.
  2. Click “Users” from the left side-menu, then on the “Manage users” page, click “Add user”:


  1. Fill in the required fields.
    Web Services usernames are email addresses that can have a maximum length of 255 (maximum of 64 characters before the ”@” symbol).

  Ensure you select “Webservices” for the role

Failure to do so will prevent requests from being processed successfully.


  “Valid IP/network(s)” field (required)

By entering your system’s IP (or range of IPs) in this field, Trust Payments will only accept Web Services requests originating from this IP. This means that even if your Web Services credentials have been compromised, requests cannot be performed without access to your IP network.

Multiple IP addresses can be separated with either a semicolon (;) or a comma (,).
Ranges of IPs may be specified by using a CIDR netmask in the format

Important: “Role if invalid IP” must be set to “Prevent login”.

  1. Allocate the sites through which you wish to process Web Services payments, by typing into the “Allocated sites” field:


  1. Click “Save”.
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