Abstract
We investigate the
g
2
-invariant bulk (1+1D, factorized)
S
-matrix constructed by Ogievetsky, using the bootstrap on the three-point coupling of the vector multiplet to constrain its CDD ambiguity. We then construct the corresponding boundary
S
-matrix, demonstrating it to be consistent with
Y(
g
2
,
a
1
×
a
1
)
symmetry.