Treasury Term is calculating interest incorrect

Hi Experts,

I am facing some issue in fixed deposit Money Market on below matters, Appreciate your help and suggestion on this below.

a) I have created 1 Fixed Term deposit Start Dt: 01.01.2016 end date 31.01.2016, actually it should calculate interest for 31 days days based on above, but system is getting calculate 30days only. How do I get it interest for 31days.

b) whenever I create any Fixed Deposit if start date or end date is public holiday it should give some warning message for information. how do I get it this, my current system not prompting any message even if its public holiday i.e. sunday.

c) Can we make it default Contract Close Date same as Term Start Date, Close date is appearing default as current date, whenever I enter Start Date e.g. 01.01.2016 if I press enter system should take as defaulted for contract date e.g. 01.01.2016.

d) I have same product type 51A but 2 different GLs for Fixed Deposit, my system posting and picking always 1 GL only not picking 2nd GL even I maintained in Account Determination.

e) I have posted some TBB1 financial transactions, I want to see FI document with Business partner in FB03 or GL reporting, currently I can't see FI document is related to which Business Partner source?

Thanks

Rao