Variable Data Type for Debit/Credit Amounts

Hi Everyone,

As AX is not my specialty I would like to confirm

What data type do we use for variables intended to contain debit or credit amounts?

A few reports that I worked with I used AmountMST as the reports code used this data type for similar variables.

Does anyone know what does MST means in AmountMST?

In a report while trying to print monthly debit and credit sums and the monthly balances I used controls: New Control → Real → ExtendedDataType = AmountMST

Is the data type and extended data type correct for this purpose?

Thanks in advance for your help.