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This method will 'undo' a key activation with a certain machine code. The key should not be blocked, since otherwise this method will throw an error.

This method is accessed by


Parameter Description Remarks
ProductId the product id required
Key the serial key string required
MachineCode The machine code (a string that identifies a device) for activation. optional. empty string by default.
Floating When true, this will release the floating license (without removing it from the list of node-locked licenses). optional. false by default.
OSInfo Additional OS related information (as a string) that will be registered as metadata in Register Event. optional. null by default.
v Method version. optional. by default, it's 1.


Parameter Description Remarks
Result This is either 0(=success) or 1(=error). always returned
Message The message that provides additional information about the result. always returned.

Example results



  • When a machine code does not exist (for example, if was never activated or deactivated at some point), an error will be thrown in the node-locking case only (e.g. when you call this method with default parameters and Floating=false). However, if floating licensing is used (i.e. Floating=true), then an error will not be thrown even if the machine code does not exist.


Access denied.
The input parameters were incorrect.
Could not find the product.
Could not find the key.
The key is blocked and cannot be accessed.
Either the machine code was never activated or key activation feature was never set up.