about dwg to bim model by iTwin Snapshot

[paprophet]

now , i test three dwg file to bim by iTwin Snapshot
the three dwg files are same and to bim file.
but just the main file show right in bim viewer , and other file show error code in viewer!

[pmconne]

but just the main file show right in bim viewer , and other file show error code in viewer!

I'm going to infer that the first screenshot is the one that shows "right" and that "error code" refers to the boxes where you expected to see text. Please clarify if I misunderstand.

You appear to be comparing two different views.
First screenshot:

Second screenshot:

Please compare the exact same views in the two .bim files and see if there are any differences.

Those boxes generally indicate a font could not be found, or the font does not supply a particular glyph.

[paprophet]

the two different views from one bim file (three same dwg files to the bim file by iTwin Snapshot )
the problem is why other views has the font does not supply a particular glyph
note : the three dwg files are same !

[pmconne]

Why would you import the same exact DWG file into 1 iModel 3 times?
Are you going to supply the DWG files? We don't have nearly enough information to diagnose the problem.