For your first question:

you can expose the _issues{} list attribute in the features of your Failed port. In the list attribute the issue location (xyz coordinates) can be found and in _isues{}.issue_found attribute you can find what check failed. The issues{}.supplementary_info{}.details field can provide you with more information.

  Looks like this in your Table ViewIf you set Attempt Repair in the GeometryValidator to Yes, most issues will be solved. If not you can probably find most information needed to repair the issues yourself in the aforementioned fields.

Glad to help if you have specific issue information!

2nd. I've read the OGC Geopackage standard and found that there are some tables that need to be included in the Geopackage file, such as gpkg_spatial_ref_sys and gpkg_contents Table. Is there an automatic way in FME to create these tables, or do I need to do it manually?

If you use the "OGC GeoPackage" (Feature)Writer, these tables are created by the writer. You can see this by reading the written geopackage with a "SQLite Non-Spatial" (Feature)Reader. A geopackage is sqlite db with a spatial extension.

This.

Personally, I think a general tip for everyone starting to use FME is to work with 2 screens, one for the workflow, one for the results. Then run workspace on one screen and view results on the second screen in the Data Inspector.

Go to Tools --> Options --> Tab Workbench, enable the checkbox "Inspect with Data Inspector when Visual Preview window closed" and then close the Visual Preview window in workbench itself.

In the Data Inspector, when selecting a feature, you can see the complete structure of a feature in the Feature Information window on the right side. Including unexposed attributes, geometry type, geometry structure etc. I think this is really important for the learning curve, to actually see what a feature is.

Feature Information can also be enabled in the Visual Preview window, but it is already cramped with Translation Log, table and graphic. I also see people putting the Translation Log on a tab, never seeing the warnings and errors pass.

Might also be I'm getting old and have a hard time to adept to the new developments :)

Firstly, thank you for the guidance, but I have tried to expose some attributes (location_sample.x/y/z), but their values are <missing>. I also couldn't

find the attribute _issues{0}.supplementary_Info{0} in the 'port fail' feature,

 it only exists in 'port invalidpart,'

but its value is also <missing>. What is actually happening, and how can I fix it

because setting the transformer to 'Attempt Repair' doesn't help.

I previously opened the geopackage file in QGIS and then brought the layers from QGIS into PostGIS. However, in QGIS, I can only see the feature table that I set up in FME. I can't find tables like gpkg_spatial_ref_sys and gpkg_contents. Additionally, when I tried to export from QGIS to PostGIS, those tables are missing.

I also tried uploading the geopackage file directly to PostGIS, but it failed because PostGIS couldn't read the file.

i also try to checking using FME inspector but cant find that table. need your help.

Try using the ListExploder instead of an AttributeExposer on your Failed features. List attributes are a little more tricky than regular attributes.

Probably these tables are not missing from the geopackage, but QGIS simply does not show them.

I have sometimes used DB Browser for SQLite to look inside a geopackage file (the geopackage format is a variant of SQLite).