User-Agent Header
User-Agent header must be supplied with all Merchant API requests prior to placing any live transactions.
For example:
MyClearpayModule/1.0.0 (E-Commerce Platform Name/1.0.0; PHP/7.0.0; Merchantname/60032000) https://merchant.example.com
Note:
In this case the Merchant ID is your company name or organisation name followed by an eight-digit number.