SAP License Keys with Limited Validity 
If the license key you requested is only valid for a limited period of time, this can be due to a number of reasons. You can find out the actual reason for this by displaying the system data in SAPNet.
The various reasons and what to do in each case are explained below.
According to the conditions of the license agreement, only the number of systems defined in the contract can be licensed on this installation. Only one of these systems can be used as a production system.
Please check whether the system overview in the initial screen matches your current system landscape:
If this is the case, please release a new installation from the your SAP Contracts Department. Then request a new, unlimited license key under the new installation number.
If the system overview does not match your current system landscape, please correct the system assignment for the installation in the system data maintenance (path: General functions ® Service ® Maintain system data). Then request a new, unlimited license key under this installation for the existing system.
As stipulated by the license agreement, a maximum of one system in each installation can be used as a production system. A production system has already been released for this installation.
Please check whether the system overview in the initial screen matches your current system landscape:
If this is the case, please release a new installation from the your SAP Contracts Department. Then request a new, unlimited license key under the new installation number.
If the system overview does not match your current system landscape, please correct the system information in the system data maintenance (path: General functions ® Service ® Maintain system data). Then request a new, unlimited license key under this installation for the existing system.
The licenses for the operating system and/or database are limited pursuant to the contractual agreement.
Please check your information and inform your SAP Contracts Department.
Once the system data has been corrected, please request a new, unlimited license key for this system.
The system data of the license key request (database and/or operating system) does not match the system data defined in the license agreement.
Please check your information and inform your SAP Contracts Department of any changes made to the system data.
Once the system data has been corrected, please request a new, unlimited license key for this system.
Your installation is assigned to a specific SAP software product. The systems in the installation, therefore, can only be released for the licensed software product.
Please check your information and inform your SAP Contracts Department of any changes made to the system data.
Once the system data has been corrected, please request a new, unlimited license key for this system.
Please contact your SAP Contracts Department. Once the contract data has been changed, please request a new, unlimited license key for this system.
According to the license agreement (demonstration or training license), a production system cannot be licensed for this installation, because use in production operation or preparations to this effect are not permitted.
Please contact your SAP Contracts Department.
You have requested a limited license key for your system. If you require an unlimited license key, please request a new, unlimited license key for the same system in this installation.