Hi Dibya ,
Setting both INSERT = 'X' and DIRECT_SAVE = 'X' at same time gives error . However , I have tried with following cases also :
1) INSERT = ' ' and SAVE = 'X'
2) INSERT = 'X' and SAVE = ' '
in both the cases sy-subrc = 0 but long text doesn't get created . Also in both the cases object is the temporary equipment no. This FM I am using in Program MIEQ0F69