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We highly recommend using LM-X together with License Activation Center (LAC) for the ultimate solution to license activation, particularly for managing greater numbers of activations. LAC provides an efficient license activation solution that lets you quickly and easily generate licenses and activation keys for end users. LAC gives end users a means to activate their own licenses, without your intervention.
LM-X with LAC
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A common way of integrating LM-X with LAC
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is by uploading xmllicgen to LAC as a license generator. LAC is responsible for handling information about existing licenses, including license generation and delivery, whereas LM-X is capable of using a generated license. You can completely automate license generation and delivery using the LAC REST and SOAP APIs that let you use LAC on any machine. In addition, the LM-X web-based UI, which is integrated with LAC, lets you activate your license online by entering your activation key in the License Management sub-tab under the Administration tab, as shown below.
How LAC works
LAC provides a web-based SOAP API that can be used across many programming languages and streamlines communication between LAC and other applications. The SOAP APIs are separated into the Vendor API and End-user API. The former is used for the administration of licenses, including managing customers or license orders, whereas the latter is used to enable end users to activate licenses by means of an activation key and, if relevant, HostID parameters. An End-user API is sufficient to activate a license.
Thanks to LAC you can completely automate license creation and activation, and minimize the support required to administrate the license fulfillment process. 
You can also activate your license manually, or partially automate your license activation as described in Different approaches to license activation.