INT 2F - License Service API - UPDATE
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
SeeAlso: 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)

See also: 2F7004

2F7003 - License Service API - UPDATE