How to pass multiple parameter to an invocable method

Invocable method accept only single list as a parameter. We can pass multiple parameters to an invocable method using an inner class.

In this example, record triggered flow has been used.

public with sharing class invocableClass 
{
    @InvocableMethod(Label='Multiple Parameters')
    public void passMultipleParameter(List<RequestClass> requestList)
    {
        //Example
        List<String> accountIds = new List<String>();
        for(RequestClass request: requestList)
        {
            accountIds.add(request.accountId);
        }
        //add your logic
    }

    public RequestClass
    {
        @InvocableVariable
        public Id accountId;

        @InvocableVariable
        public Id contactId;
    }
}