a2eb26c5_hant_Interface___WebMoney_Wiki__Field
[HTML Field Name] LMI_SECRET_KEY [Description] Secret Key is known only to the merchant and Merchant WebMoney Transfer. The parameter will be empty if the Result URL is changed or not secured or the ' Send the secret key to the Result URL' option is disabled. [Field] 
Secret Key
Web Merchant Interface - WebMoney Wiki
Field