  We compute the five point world sheet scattering amplitude of a symmetric
closed string Ramond-Ramond , a transverse scalar field, a world volume gauge
field and a real tachyon in both world volume and transverse directions of
brane in type IIA and IIB superstring theory. We provide the complete analysis
of $<C^{-1} \phi^0 A^0 T ^{-1}>$ S-matrix and show that both $u'=u+\frac{1}{4}$
and $t$ channel bulk singularity structures can also be examined by this
S-matrix. Various remarks about new restricted Bianchi identities on world
volume for the other pictures have also been made.
