SAP Licenses 
For managing the SAP licenses, the following tools are available as standard.
SAP License Keys
To use your SAP systems successfully, they must be assigned with lasting SAP license keys, as described in SAP License Keys.
Additional information is available in the SAP Service Marketplace under the alias licensekeys.
Licensing the AS Java
Documents how you request and import a license key for AS Java.
More information is available on the SAP Service Marketplace under the Quick Link licensekeys.
SAP System Measurement
With the measurement program (transaction USMM), you can ascertain the number of users and used engines of the SAP software for each system. You can then pass the measurement results to SAP.
Additional information is available in System Measurement, and in the SAP Service Marketplace under the alias licenseauditing.
License Administration Workbench (LAW)
Using the License Administration Workbench, you can consolidate the measurement results of one or more systems, as described in License Administration Workbench. You can then pass the consolidated measurement results to SAP.
Additional information is available in the SAP Service Marketplace under the alias licenseauditing.
BPO Usage Measurement
Documents licensing for customers that sell services to other companies.