Actinic only allows the Merchant Installation ID to be user defined.
Accoring to Worldpay, Merchant Codes are not bound to Installation IDs, therefore if you run several different sites, all within the same Worldpay account, it would be excellent if the user could define both the Installation ID and the Merchant Code.
I cant see any way of achieving this without editing the Worldpay PSP Perl directly, please allow this to be done from within the Business Settings > Payments > Configure Method dialogue box.
Accoring to Worldpay, Merchant Codes are not bound to Installation IDs, therefore if you run several different sites, all within the same Worldpay account, it would be excellent if the user could define both the Installation ID and the Merchant Code.
I cant see any way of achieving this without editing the Worldpay PSP Perl directly, please allow this to be done from within the Business Settings > Payments > Configure Method dialogue box.