SAPCAR terminates when you process a SAR archive with the following error messages:
non-unicode SAPCAR: format error in header
unicode SAPCAR: Illegal byte sequence
The SAPCAR 700 archive format was enhanced. SAPCAR 700 is downward compatible and able to extract all available archive formats. However, SAPCAR versions prior 640 patch level 4 cannot extract archives created by SAPCAR 700 and subsequent.
Either use SAPCAR 700 or download the latest SAPCAR 640 patch from SAP Service Marketplace at service.sap.com/patches -> Support Packages and Patches -> Entry by Application Group -> Additional Components -> SAPCAR.