Hi Srini,
Check in SFW5 if the Business Function FIN_TRM_PSM_INTEGRATION is active. By your previous post, its more likely that the BF is not active.
As i mentioned earlier, if the BF is not active, you need to assign the Fund in Tcode FMDERIVE for the relevant GL.
Also if you wish to activate the business function now and considering there are transactions/positions already created in the system before activation, you also need to perform a Treasury Migration to migrate all existing positions to relevant funds.
Also For you rollover issue, check comment from Feng. You don't need to enter amount again while doing the roll over. once you give the new roll over date, the system will only post interest flows.
Regards,
Nikhil