lib/promisepay-credentials.xml
<?xml version='1.0'?>
<ApiCredentials>
<ApiUrl>https://test.api.promisepay.com/</ApiUrl>
<ApiLogin>idsidorov@gmail.com</ApiLogin>
<ApiPassword>d897f812e8485728e1de7d8ae092b75a</ApiPassword>
<ApiKey>aWRzaWRvcm92QGdtYWlsLmNvbTpkODk3ZjgxMmU4NDg1NzI4ZTFkZTdkOGFlMDkyYjc1YQ==</ApiKey>
</ApiCredentials>