GDML File issue

Hello,

While running a GDML file I get error:

### Number of threads is forced to 20 by Environment variable G4FORCENUMBEROFTHREADS.
G4GDML: Reading '/homes/sanchitsharma/Geant4/CNEC/Improved_NaI/source/src/tool.gdml'...
G4GDML: VALIDATION ERROR! ID value 'He3holder.STL_v1159' is not unique at line: 3733
G4GDML: VALIDATION ERROR! empty content is not valid for content model '(world)' at line: 34343
G4GDML: Reading definitions...
G4GDML: Reading materials...
G4GDML: Reading solids...
G4GDML: Reading structure...
G4GDML: Reading setup...
G4GDML: Reading '/homes/sanchitsharma/Geant4/CNEC/Improved_NaI/source/src/tool.gdml' done!
Stripping off GDML names of materials, solids and volumes ...
<<< Geant4 Physics List simulation engine: QGSP_BIC_HP

This does not stops my run and everything else is smooth. I was just curious if anyone else has faced this issue before and what could be the implications of this validation error and how can this be resolved?

Thanks very much!

The GDML validation does not necessarily stop your application run, but that doesn’t mean your geometry is correctly setup and you may be simply lucky your simulation does not crash.
The validation errors in importing the GDML file indicates a problem you need to correct in your GDML description (i.e. IDs for each entity must be unique).