If you are a design partner, implement the extfn_get_license_info library-level function to enable the server to obtain licensing information from a v4 UDF.
an_extfn_license_info
(_entry an_extfn_get_license_info) ( an_extfn_license_info **license_info );
license_info is an output parameter that returns the license information as received from the library. You define the license information in the a_v4_extfn_license_info structure.
Design partners must specify the SAP-supplied license key in the a_v4_extfn_license_info structure, and must ensure that the library exports extfn_get_license_info as an entry point.