fix wall/srd

I changed in.srd.mixture in examples directory of LAMMPS package to work in 3 dimension and i want to use fix wall/srd command in order to create a wall that can interact with srd particles in the middle of simulation box . Because i want to create a wall that is impermeable towards srd particles. So i used fix wall/srd command but i faced the following error:
ERROR on proc 0: SRD particle 1337 started inside big particle 5 on step 3 bounce 1
I attach my input file.
If it is possible for you, please check my input file and guide me what my mistake is?
Best regards;

in.srd.mixture (1.9 KB)

See the fix srd doc page and the keyword inside - it tells you
what to do about this.