Int 2F Fn 7003  - License Service API - Update                             [N]

   AX = 7003h
   CX = license server index (0000h to 001Fh)
   DS:DX -> SLSUPDATE structure
   ES:BX = provider specific handle for the license context

Return: AL = status
       00h not installed
       FFh installed

See Also: AX=7004h,AX=7005h

Format of SLSUPDATE structure:
Offset Size    Description
 00h   DWORD   (return) status code
 04h   DWORD   (call) handle identifying license context
 08h   DWORD   (call) total units consumed
 0Ch   DWORD   additional units required
 10h   DWORD   address of comment string
 14h   DWORD   address of SLSCHALLENGE structure (see AX=7001h)