Oracle Error PLS-00520: MAP methods must be declared without any parameters other than (optional) SELF.

Oracle Error Message

PLS-00520: MAP methods must be declared without any parameters other than (optional) SELF.

Reason for the Error

A MAP member function was declared with a parameter. Map member functions can have only one parameter: the default SELF parameter. Map methods must be declared without any parameters. The compiler adds the SELF parameter.

Solution

Remove the parameter from the map member function.