fix srd

In my code ( in.srd.mixture), i set a frozen wall as big particles.
In data file, i adjust diameter of wall’ particles to 3 in lj units and diameter of srd’ particles to 0
I think srd particles no longer move thru wall. But my code is stopped with error as follows:
ERROR on proc 0: SRD particle 8401 started inside big particle 709 on step 4243 bounce 2
If it is possible for you please help me how i can solve this issue.
Thanks for your help

If you have overlapping big particles, this can happen. There is a "overlap"
option in the fix srd command. See the doc page for details and set
it accordingly.