Hi,

 I am troubleshooting Energyplus building geometry errors and advise on overall approach am taking with the geometry to debug and fix the errors and warning.  I have had such warnings before in prior projects but non severe ones. Has anyone come across these severe errors?
** Warning ** FenestrationSurface:Detailed="Surface_251822.362344_4435F1A7 in room OPERATING THEATER T100",
invalid field Outside Boundary Condition Object
** ~~~ ** ...when Base surface uses "Outdoors" as Outside Boundary Condition Object, subsurfaces need to be blank to
inherit the outdoor characteristics.
** ~~~ ** ...Surface external characteristics changed to reflect base surface.
** Warning ** FenestrationSurface:Detailed="Surface_251822.362344_53D937F0 in room GENERAL", invalid field Outside
Boundary Condition Object
** ~~~ ** ...when Base surface uses "Outdoors" as Outside Boundary Condition Object, subsurfaces need to be blank to
inherit the outdoor characteristics.
** ~~~ ** ...Surface external characteristics changed to reflect base surface.
** Warning ** GetSurfaceData: InterZone Surface Areas do not match as expected and might not satisfy conservation of
energy:
** ~~~ ** Area=1.5 in Surface=Surface_247883_69128E6D in room CORRIDOR COR. 100E, Zone=CORRIDOR COR.
100E
** ~~~ ** Area=1.9 in Surface=Surface_247883_10001A56 in room ELEVATOR SHAFT ELEV ELEV, Zone=ELEVATOR
SHAFT ELEV ELEV
** Warning ** CheckUsedConstructions: There are 1 nominally unused constructions in input.

** Warning ** DetermineShadowingCombinations: Surface="Surface_251822.22281_20E6BF59 in room CORRIDOR COR
200A" is a receiving surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Warning ** DetermineShadowingCombinations: Surface="Surface_250846.14732_B663C64C in room CORRIDOR COR
200A" is a receiving surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Severe ** DetermineShadowingCombinations: Surface="Surface_253232.214579_AD2DDC5A in room OPERATING
THEATER T100" is a casting surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Severe ** DetermineShadowingCombinations: Surface="Surface_253232.214611_64188A52 in room OPERATING
THEATER T100" is a casting surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Severe ** DetermineShadowingCombinations: Surface="Surface_253232.215667_D4D61C63 in room OPERATING
THEATER T100" is a casting surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Severe ** DetermineShadowingCombinations: Surface="Surface_255074_CE73536E in room OPERATING THEATER
T100" is a casting surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Severe ** DetermineShadowingCombinations: Surface="Surface__948C6E24 in room OPERATING THEATER T100" is
a casting surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Severe ** DetermineShadowingCombinations: Surface="Surface_14529_B1C4A821 in room CORRIDOR COR 100B" is
a casting surface and is non-convex.
** ~~~ ** ...Shadowing values may be inaccurate. Check .shd report file for more surface shading details
** Severe ** DetermineShadowingCombinations: Surface="Surface__CA2B7D2E in room CORRIDOR COR 100D" is a
casting surface and is non-convex.