Note that as of CUCM 9.0, licensing is managed by the Enterprise Licensing Manager/Cisco Prime component, and so most license details will not be present in the CUCM database for retrieval via AXL. Note that ELM/Prime does not have any supported APIs itself - it may not be possible to programmatically retrieve all licensing details.
From 9.x-10.0, I believe that the requests listed above may be accepted, but may return invalid/empty results. For these releases essentially no licensing info can be retrieved.
For 10.5, a 'getLicensedUser' operations was added, see an example below, which gets some basic license info per individual.
For 11.0, 'listLicensedUser' was added for searching/bulk info of users, along with 'doUpdateLicenseUsage', which (I think) causes CUCM to sync license info with ELM/Prime for updated data. Note the operations-by-release page does not seem to reflect these two APIs currently (will fix.)
See this page for obtaining the AXL WSDL from the CUCM server: