SAID is ServiceAgreementIDentifier.....a unique number provided to HP customers.
If you don;t have SAID, please contact local HP sales with valid product number (j#)....HP would have delivered license certificates/documents etc after license purchase...SAID should be one among those.
shiv_p is right, HP would have given you a SAID along with license documents.
Do you have a local HP sales contact you can reach? If not, i'm happy to get you in touch with someone.