Hi Raju
The MRA is the mathematical tool of SAP TRM. You can calculate NPV's for derivative products meaning non linear calculation of a NPV.
If you have Money market Transactions it is not necessary to activate the NPV if you only Need a linear calculation of the deal. This means that TPM1 only calculates the foreign currency valuation.
If you Need the NPV (this inccludes the Change of the yield curve during life of the Transaction) for Money Market Transactions then you have to activate the MRA. The closing is then first to calculate NPV with TPM60 and then post the values with TPM1.
For securities (Shares and Bonds) the MRA is not needed because you get a closing price from the Exchange.
CRA might be necessary if you have to check the counterparty of the issuer risk.
Portfolio Analyzer is necessary if you need to benchmark your postions.
Kind regards
Juerg Heiz