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This method will block a specific license key to ensure that the key cannot be accessible by most of the methods in the Web API
(activation, validation, optional field, and deactivation).
Note, blocking the key will still allow you to access the key in Web API 3, unless otherwise stated for a given Web API 3 method.
To do the reverse, please see Unblock Key.
This method is accessed by https://app.cryptolens.io/api/key/BlockKey
the product id
||the serial key string
||optional. by default, it's 1.
||This is either 0(=success) or 1(=error).
The message that provides additional information about the result.
If it's a successful result, either Changed or Not changed
will be returned (i.e. if the key was already blocked, Not changed is returned.)
Otherwise, in case of an error, a short message will be returned describing the error.
|The input parameters were incorrect.
|Could not find the product.
|Could not find the key.