The file that you are trying to import is not a supported file format. Only TAR file format is supported.

Trying to import the webexceptions.

File is Entities.xml

tar file is created by cmd

tar -cvf newtarfilename.tar Entities.xml
The command is straight from the manual. I used 7zip too, which was my favorite tool in the past for this.

When importing a red box appears "The file that you are trying to import is not a supported file format. Only TAR file format is supported."

Well, it is .tar

applog.log shows nothing.
csc.log in Debug mode shows:

tail /log/csc.log -f |grep import

DEBUG     Jul 13 18:02:52  [worker:29578]: # OPCODE Called: 'upload_text_import_file'
MESSAGE   Jul 13 18:02:52  [worker:29578]: {"request":{"method":"opcode","name":"upload_text_import_file","version":"1.8","type":"json","length":396,"data":{ "___serverport": 4444, "importtype": "2", "___component": "GUI", "transactionid": "5635995", "mode": 727, "currentlyloggedinuserid": 153, "importfile": "\/sdisk\/upload\/newtarfilename.tar", "APIVersion": "1800.2", "___serverprotocol": "HTTP", "___username": "xxxx@xxxxxxxxx.xxx", "___meta": { "sessionType": 1 }, "___serverip": "172.xxx.xxx.xxx", "currentlyloggedinuserip": "10.xxx.xxx.31" }}}
DEBUG     Jul 13 18:02:52  [worker:29578]: ### insert_uuid: hdr: len=363 content=0 method=0 name=upload_text_import_file
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: init_db_handle_pl: Initializing DBI DB handle
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: creating json object
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: do_get: SET_Maintenance
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: do_prep_query: PREPSTMT without ARGS: select value from tblconfiguration where key='ips_cat_version'
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: execute_prepare_query: Initializing database for nobody:corporate
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: CSC::PREPSTMT : Create new connection.
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: get_txid:Transaction ID: 191534065
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: do_prep_query: PREPSTMT: 'select value from tblconfiguration where key='ips_cat_version''
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: do_at: (clean_importfiles:delete)
ERROR     Jul 13 18:02:52  [timer:1654]: delete_sched_node: timer clean_importfiles do not exist
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: log_exec: Command: /bin/mv $importFile /sdisk/APIImport.tar
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: csc_execve: Child exited with status 0
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: create_act_out_perl_obj: varname=out
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: create_act_out_perl_obj: out.status=0
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: log_exec: Command: crimport -s -i /sdisk/APIImport.tar  -a ?? -v /_conf/csc/IOMappingFiles/ -l /log/apiparser.log -C ?? $CURR_API_DISPLAY_VERSION $ips_cat_corp_ver
ERROR     Jul 13 18:02:52  [upload_text_import_file:29578]: csc_execve: Child exited with status 10
ERROR     Jul 13 18:02:52  [upload_text_import_file:29578]: log_exec: Failed Command: crimport -s -i /sdisk/APIImport.tar  -a ?? -v /_conf/csc/IOMappingFiles/ -l /log/apiparser.log -C ?? $CURR_API_DISPLAY_VERSION $ips_cat_corp_ver
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: create_act_out_perl_obj: varname=out
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: create_act_out_perl_obj: out.status=10
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: create_act_out_perl_obj: out.error=/sdisk/api-2021-07-13-18-02-52/Entities.xml:1778: parser error : Opening and ending tag mismatch: Configuration line 2 and WebFilterException
WARNING   Jul 13 18:02:52  [upload_text_import_file:29578]: Action with NOFAIL Failed.
DEBUG     Jul 13 18:02:52  [upload_text_import_file:29578]: destroy_db_handle_pl: Destroying DBI DB handle.
INFO      Jul 13 18:02:52  [upload_text_import_file:29578]: opcode 'upload_text_import_file': time taken: 0.130764788 seconds
DEBUG     Jul 13 18:02:52  [worker:29578]: # OPCODE Exited: 'upload_text_import_file' with Status: '500'



looks like there is some error in the xml file - can't it show a correct error then?