When you import a HANA modelling view, Informatica adds a prefix to the parameter name. The prefix is used to indicate the parameter type.
You can use the following types of parameters:
Mandatory Parameter. A parameter for which you are required to specify a value. For example, in the field param_M_AENAM, param_M is the prefix for a mandatory parameter that Informatica adds. AENAM is the parameter name that is a part of HANA modelling views.
Optional Parameter. A parameter for which you do not need to provide a value. For example, in the field param_O_UNAME, param_O is the prefix for an optional parameter that Informatica adds. UNAME is the parameter name that is a part of HANA modelling views.