2443848 - SMLT: Error 8 during disassembling PAT file "**.PAT"

After language installation, you run language parts import (RSTLAN_IMPORT_OCS) using SMLT, however it fails.
From relevant job log, the following error happens.
(The package name and ".PAT" name are just examples.)

YYYY/MM/DD HH:MM:SS Job started
YYYY/MM/DD HH:MM:SS Step 001 started (program RSTLAN_OCS_BTC, variant &0000000000003, user ID DDIC)
YYYY/MM/DD HH:MM:SS Starting import
YYYY/MM/DD HH:MM:SS ...Support Package SAPK-116AGINDMIS for Language J imported
YYYY/MM/DD HH:MM:SS Error 8 during disassembling PAT file CSR012003**_00***.PAT
YYYY/MM/DD HH:MM:SS Program ended with rc 8 - please execute RSTLAN_IMPORT_OCS again
YYYY/MM/DD HH:MM:SS Job finished

release independent

SMLT, RSTLAN_IMPORT_OCS, Error 12, SPAM, SEPS, disassembling, language parts, supplement , KBA , BC-CTS-LAN , Language Transport Tools (application server ABAP) , Problem