1) (All Models except -800 with Short Field Performance (SFP) Option and -900ER)
C
1
0
(M)(O) May be inoperative provided:
a) System is deactivated,
b) Operations are conducted in accordance with AFM, and
c) For models with Blended Winglet with Speed Brake Load Alleviation System, Speed Brake Load Alleviation System is considered inoperative.
2) (-800SFP and -900ER)
C
1
0
(M)(O) May be inoperative provided:
a) System is deactivated,
b) Appropriate performance adjustments are applied, and
c) For models with Blended Winglet with Speed Brake Load Alleviation System, Speed Brake Load Alleviation System is considered inoperative.
Did you check your MEL, this is the MMEL. They may have replaced the "Appropriate performance adjustments are applied" with more detail.