I am not sure what i am seeing different in your attached file is the cause of different explain plans

In attached file SAP screen shot has query as
select * from JCDS where .........

In query which you are trying it has

SELECT "MANDT" , "OBJNR" , "STAT" , "CHGNR" , "USNAM" , "UDATE" , "UTIME" , "TCODE" , "CDTCODE" , "INACT" , "CHIND"
FROM "JCDS" WHERE .........

Can you try explain plan in sql with "select * from JCDS where ...."