We discuss some physical prospective of non-BPS effective actions of typeIIA,IIB superstring theories. Dealing with entire all four and five pointfunctions, including a closed string Ramond-Ramond (in terms of both its fieldstrength and its potential ), gauge fields, scalar fields as well as a realtachyon, leads us to various restricted world volume and bulk Bianchiidentities, due to the underlying symmetry structures. The entire non-BPSamplitudes and some aspects of non-BPS scattering amplitudes including theirChan-Paton factors are elaborated. Lastly all the singularity structures, theircontact terms, their higher derivative corrections to all orders in $\alpha'$as well as restricted/modified Bianchi identities are extracted under severalassumptions.
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